JP5026996B2 - Floor support, floor structure, and floor installation method - Google Patents

Description

  The present invention relates to a floor support that supports a floor material of a double floor, a floor structure using the floor support, and a floor installation method.

  In the floor structure, there is a case where a double floor structure is provided in which a floor is provided at a predetermined height from the floor base via a support member in order to improve the performance of blocking floor impact sound. In such a double floor structure, for example, as disclosed in Patent Document 1, a technique for attenuating vibration from a floor using an elastic body and a mass body is disclosed. According to the floor structure described in Patent Document 1, vibration from the floor can be effectively damped.

By the way, in the existing double floor structure, cushion rubber is arrange | positioned on a floor slab, a support bolt is attached on it, and the flooring is supported by the support bolt. In order to configure the floor structure described in Patent Document 1 using the cushion rubber and the support bolts installed in this manner, the base panel of the floor material is removed and the second elastic member and the mass body are installed. It was necessary and complicated.
JP 2007-04-0093 A

  The present invention has been made in consideration of the above facts, and it is possible to install the floor cushion sound while reducing the burden of work using the existing cushion rubber and the support bolt while improving the performance of blocking the floor impact sound. It is an object of the present invention to provide a possible floor support, a floor structure, and a floor installation method.

  The floor support of the present invention according to claim 1 is supported on the floor slab and is elastically deformable to damp vibration, and is supported on the first elastic member in the opposite direction to the floor slab. A floor support that supports a floor material that includes a plurality of base panels and includes a plurality of base panels, and is supported by the support member and is elastic. A second elastic member that is deformable and is sized to be inserted into a joint gap formed between the plurality of adjacent base panels; and supported by the second elastic member; A mass body that is narrow in width and is disposed along the joint gap and that is displaced by elastic deformation of the second elastic member to attenuate vibrations.

  According to the floor support tool of the first aspect, when vibration is applied to the floor material, the vibration is transmitted to the second elastic member. Thus, the vibration from the floor material to the floor slab is attenuated by the second elastic member moving up and down so that the mass body absorbs vibration by elastic deformation. The damped vibration is further damped by the first elastic member and transmitted to the floor slab, so that the floor impact sound is well cut off.

  In addition, since the second elastic member is sized to be inserted into the joint gap formed between the base panels, and the mass body is narrower than the joint gap, the second elastic member and the mass body Can be installed with the base panel still installed using the joint gap.

  The floor support tool according to claim 2 further includes a receiving member disposed between the base panel and the supporting member, and the second elastic member is supported by the supporting member via the receiving member. It is characterized by that.

  By interposing the receiving material in this way, the second elastic member can be easily supported by the support member.

  The floor support according to claim 3 is characterized in that the mass body is disposed on an upper portion of the second elastic member, and the second elastic member is compressively deformed by displacement of the mass body.

  By making the arrangement position of the mass body the upper part of the second elastic member, the second elastic member can be elastically deformed in the compression direction.

  The floor support tool according to claim 4 is characterized in that the mass body is disposed on a side portion of the second elastic member, and the second elastic member is shear-deformed by displacement of the mass body.

  By making the arrangement position of the mass body the side part of the second elastic member, the second elastic member can be elastically deformed in the shear direction.

  The floor structure described in claim 5 includes a floor slab and the floor support tool according to any one of claims 1 to 4 disposed on the floor slab.

  According to the floor structure of the present invention, the floor support can be installed while the base panel is still installed, so that the burden on the installation work can be reduced.

  The floor installation method according to claim 6 is a first elastic member that is supported on the floor slab and is elastically deformable and damps vibrations, and a support member that is supported on the first elastic member and extends in a direction opposite to the floor slab. And a floor mounting method in which a member for attenuating vibration is installed on a floor structure that supports a plurality of base panels, wherein the support body has a second elastically deformable second structure. The second elastic member is supported by the second elastic member and is narrower than a joint gap formed between the adjacent base panels, and is disposed along the joint gap, and the second elasticity A mass body that is displaced by elastic deformation of the member to attenuate vibration is inserted into the joint gap from above the base panel and supported on the support member, and is attached to the support member.

  Thus, the burden of the installation work of a base panel can be reduced by installing the 2nd elastic member and mass body after installing a base panel.

  As described above, according to the floor support, the floor structure, and the floor installation method of the present invention, the floor impact sound blocking performance can be improved and the burden of flooring installation work can be reduced. .

  [First Embodiment]

  An embodiment of a floor support in the present invention and a floor structure to which the floor support is applied will be described with reference to the drawings. In addition, arrow UP in a figure shows the upward direction in a floor structure.

  A floor structure 10 shown in FIG. 1 is a double floor (dry sound insulation double floor) structure mainly used in an apartment house, and a floor impact sound (walking sound, object) that is emitted from the upper floor and propagates downward. This is a structure for reducing falling sounds of children, jumping of children, and the like.

  (Structure of floor structure and floor support)

  As shown in FIG. 1, the floor structure 10 has a plurality of floor supports 16 arranged at a predetermined interval between a concrete floor slab 12 and an upper floor material 14 to be a frame floor. In addition, a space is formed between the floor slab 12 and the upper floor material 14 by the intervention of the floor support 16 to obtain a sound insulation effect.

Note that the upper flooring 14 of the present embodiment has a laminated structure in which a base panel 14A is provided, a scraping material 14B is provided on the base panel 14A, and a finishing material 14C is further provided thereon. Here, the upper floor material 14 (the ground panel 14A and the stripping material 14B) excluding the finishing material 14C and the floor support 16 are the floor ground materials.
In addition, the discarding material 14B is not necessarily required, and may be configured without the discarding material 14B.

  FIG. 2 shows a layout diagram of the base panel 14A and the floor support 16. Each of the base panels 14A is laid so that a gap having a predetermined interval (hereinafter referred to as “joint M”) is formed. The joint M is set to an interval of about 10 mm to 20 mm in order to prevent a squeaking sound due to contact between the base panels 14A. The floor support 16 is disposed so as to straddle the joint M.

  As shown in FIGS. 3 to 5, the floor support 16 includes a cushion rubber 18 as a first elastic member, a support bolt 22 as a support member, a cushion base 26 as a second elastic member, and a mass body 40. I have.

  The cushion rubber 18 is disposed on the floor slab 12. The cushion rubber 18 has a cylindrical shape, and is supported on the floor slab 12 in order to attenuate the vibration from the upper floor material 14, and can be elastically deformed.

  On the cushion rubber 18, a support bolt 22 is supported in an upright state via an intermediate receiving member 20 as an intermediate receiving portion. The intermediate receiving member 20 has a cylindrical shape and is provided with a flange portion 20A in the intermediate portion. One side of the cylindrical portion is inserted into the cylinder inside of the cushion rubber 18 and is directed to the lower surface of the flange portion 20A (to the cushion rubber 18 side). Surface) is fixed to the upper surface of the cushion rubber 18 (the surface opposite to the surface on the floor slab 12 side). A female screw portion 20B is formed on the inner peripheral surface of the cylindrical portion of the intermediate receiving member 20, and a male screw portion 22A formed on the shaft portion of the support bolt 22 is screwed into the female screw portion 20B. Thereby, the intermediate receiving member 20 is integrated with the support bolt 22.

  Under the base panel 14A, a support panel 15 is disposed across the joint M at predetermined intervals so as to support the base panel 14A. The support panel 15 has a square plate shape, and an adjustment hole 15A is formed at the center. The upper end portion of the support bolt 22 is disposed in the adjustment hole 15A.

  The support bolt 22 extends in the opposite direction to the cushion rubber 18, that is, in the direction opposite to the floor slab 12, and supports the upper floor material 14 via the panel receiving member 24 and the support panel 15. The panel receiving member 24 includes a cylindrical cylindrical portion 24B and a flange portion 24A protruding outward from one opening of the cylindrical portion 24B. The cylindrical portion 24B of the panel receiving member 24 is inserted and fixed in the adjustment hole 15A of the support panel 15, and the upper surface (surface directed toward the upper flooring 14) of the flange portion 24A is the lower surface (floor slab) of the support panel 15. 12). A female screw portion 24C is formed on the inner peripheral surface of the cylindrical portion of the panel receiving member 24, and a male screw portion 22B formed on the shaft portion of the support bolt 22 is screwed into the female screw portion 24C.

  A recess 22M (see FIG. 5A) for inserting a flathead screwdriver is formed at the tip of the support bolt 22, and a stripping material 14B and a finishing material 14C are laid on the base panel 14A of the upper floor material 14. The height of the support panel 15 and the base panel 14A from the floor slab 12 can be adjusted by inserting a flat-blade screwdriver into a recess (not shown) of the support bolt 22 and rotating the support bolt 22 in a state before the operation. It can be done. The upper flooring 14 is disposed with a space between the upper flooring 14 and the floor slab 12.

  A cushion pedestal 26 and a mass body 40 are supported on the upper portion of the support panel 15 via mounting brackets 28.

  The mass body 40 has a shape in which a central portion of a square plate-like member is cut out, and includes two square plate portions 40A and a connecting portion that connects the two square plate portions 40A on one end side. 40B. The two square plate portions 40A and the connecting portion 40B are flush with each other, and a space R is formed between the two square plate portions 40A. As shown in FIGS. 5 and 6, the width W <b> 1 that is the plate thickness of the mass body 40 is narrower than the width W <b> 0 of the joint M, and the mass body 40 is arranged along the joint M. The connecting portion 40B is configured with an adjustment hole 40H through which a flat-blade screwdriver can be inserted at the center, and an attachment hole 40N through which the mounting screw 43 can be inserted on both sides of the adjustment hole 40H. Has been.

  The cushion pedestal 26 has a prismatic shape having the same width W1 as that of the mass body 40, and is bonded to the lower side of the connecting portion 40B. An adjustment hole 26H is formed at a position corresponding to the adjustment hole 40H of the cushion base 26. The cushion pedestal 26 is supported by the support bolts 22 in order to attenuate the vibration from the upper flooring 14, and is made of soft rubber so as to be elastically deformable. A load in the compression direction acts on the cushion base 26 by the mass body 40. The cushion pedestal 26 does not necessarily have the same width as the mass body 40 and may be any width that can be inserted into the joint M.

  A mounting bracket 28 is bonded to the lower side of the cushion base 26. The mounting bracket 28 has a rectangular plate shape having the same width W1 as the mass body 40, and both ends in the direction along the joint M are bent downward. A mounting hole 28N is formed at a position corresponding to the mounting hole 40N of the mounting bracket 28. The mounting bracket 28 is placed on the upper surface of the support panel 15 and is mounted on the support panel 15 by screwing a mounting screw 43 into the support panel 15 through the mounting hole 28N.

  In the above installation state, the cushion base 26 and the connecting portion 40 </ b> B of the mass body 40 are disposed in the joint M. In the square plate portion 40A of the mass body 40, the support panel 15 is disposed in the space R, the upper portion is disposed in the joint M, and the other portions are disposed between the base panel 14A and the floor slab 12. .

  The mass body 40 is displaced by elastic deformation of the cushion pedestal 26 to attenuate the vibration from the upper floor material 14. The cushion pedestal 26 and the mass body 40 are subjected to vibration from the upper floor material 14 to the floor slab 12. On the other hand, it functions as a dynamic vibration absorber.

  (Construction procedure of the first embodiment)

  Next, the construction procedure when configuring the floor structure 10 will be described.

  In the present embodiment, the mass body 40 and the cushion base 26 are installed on the existing upper floor material 14 supported by the cushion rubber 18, the support bolts 22, and the support panel 15.

  First, the finishing material 14C and the scraping material 14B of the upper floor material 14 are removed to expose the base panel 14A. Next, the integrated mass body 40, the cushion base 26, and the mounting bracket 28 are prepared, inserted into the joint M, and the mounting bracket 28 is placed on the support panel 15. Then, the mounting screws 43 are screwed into the support panel 15 side from the mounting holes 28N, and the mass body 40 and the cushion base 26 are mounted on the support panel 15.

  Next, the height of the base panel 14 </ b> A from the floor slab 12 is adjusted by inserting a flathead screwdriver through the adjustment holes 26 </ b> H, 40 </ b> H, 15 </ b> A and inserting the screwdriver into the recess 22 </ b> M of the support bolt 22 to rotate the support bolt 22.

  Then, the stripping material 14B is laid on the base panel 14A, and the finishing material 14C is laid on the stripping material 14B. In this way, a double floor structure 10 is constructed.

  (Function)

  Next, the operation of the above embodiment will be described.

  The vibration of floor impact sound (for example, walking sound) generated on the upper floor is transmitted from the upper floor material 14 to the cushion base 26 via the support panel 15. As a result, the cushion base 26 is elastically deformed, and the mass body 40 moves up and down so as to absorb the vibration, thereby attenuating the vibration.

  According to the present embodiment, the mass body 40 and the cushion pedestal 26 can be installed on the existing floor structure without removing the base panel 14A, so the burden of installation work can be reduced.

  [Second Embodiment]

  Next, a second embodiment of the present invention will be described. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 7, the floor structure 60 of the present embodiment includes a plurality of floor supports 62 arranged at a predetermined interval between a concrete floor slab 12 and an upper floor material 14 that are to be a frame floor. A space is formed between the floor slab 12 and the upper flooring 14 by the intervention of the floor support 62, and a sound insulation effect is obtained.

  In the floor structure 60 of the present embodiment, members other than the mass body of the floor support, the cushion base, and the mounting bracket are the same as in the first embodiment. Further, as described in the first embodiment, the stripping material 14B is not necessarily required, and may be configured without the stripping material 14B.

  As shown in FIGS. 8 and 9, the mass body 50 of the floor support 62 of the present embodiment is composed of two square plate members 50A. The square plate member 50A has a square plate shape, and the width W2 that is the plate thickness is narrower than the width W0 of the joint M.

  The mounting bracket 64 is U-shaped and includes two side plate portions 64A arranged in the vertical direction and a connecting portion 64B that connects the two side plate portions 64A. The mounting bracket 64 has a connecting portion 64 </ b> B disposed on the support panel 15 with the U-shaped opening portion facing down. The mounting bracket 64 has the same width W2 as that of the mass body 50, and an adjustment hole 64H is formed at the center of the connecting portion 64B. In addition, attachment holes 64N are formed on both sides of the adjustment hole 64H.

  A second elastic member 52 is bonded to each of the outer side surfaces of the side plate portion 64 </ b> A of the mounting bracket 64. The second elastic member 52 has the same width W2 as the mass body 50 and is disposed along the side plate portion 64A. One end surface of the square plate member 50 </ b> A constituting the mass body 50 is bonded to the side opposite to the side plate portion 64 </ b> A of the second elastic member 52. That is, the mass body 50 is held by the mounting bracket 64 via the second elastic member 52. The second elastic member 52 is supported by the support bolt 22 via the mounting bracket 64 and the support panel 15 in order to attenuate the vibration from the upper flooring 14, and is made of soft rubber and can be elastically deformed. Is done.

  (Construction procedure of the second embodiment)

  Next, the construction procedure when configuring the floor structure 60 will be described.

  Also in this embodiment, the mass body 50 and the second elastic member 526 are installed on the existing upper floor material 14 supported by the cushion rubber 18, the support bolts 22, and the support panel 15.

  First, the finishing material 14C and the scraping material 14B of the upper floor material 14 are removed to expose the base panel 14A. Next, the integrated mass body 50, the second elastic member 52, and the mounting bracket 64 are prepared, inserted into the joint M, and placed on the support panel 15 with the U-shaped downward. . Then, a mounting screw 63 is screwed into the support panel 15 side from the mounting hole 64N, and the mass body 50 and the second elastic member 52 are mounted on the support panel 15.

  Next, the height of the base panel 14A from the floor slab 12 is adjusted by inserting a flathead screwdriver through the adjustment holes 64H and 15A, and inserting the screwdriver into the recess 22M of the support bolt 22 to rotate the support bolt 22.

  Then, the stripping material 14B is laid on the base panel 14A, and the finishing material 14C is laid on the stripping material 14B. In this way, a double floor structure 10 is constructed.

  (Function)

  Next, the operation of the above embodiment will be described.

  The vibration of floor impact sound (for example, walking sound) generated on the upper floor is transmitted from the upper floor material 14 to the second elastic member 52 via the support panel 15 and the mounting bracket 64. Accordingly, the second elastic member 52 is elastically deformed, and the mass body 50 is moved up and down so as to absorb the vibration, so that the vibration is attenuated.

  Also according to the present embodiment, the mass body 50 and the second elastic member 52 can be installed on the existing floor structure without removing the base panel 14A, so the burden of installation work can be reduced.

  Further, since the vibration is absorbed by elastically deforming the second elastic member 52 in the shearing direction, the spring constant is reduced when using rubber having the same hardness as compared with the case of using elastic deformation only in the compression direction. can do.

It is sectional drawing which shows the longitudinal cross-section of the floor structure and floor support which concern on 1st Embodiment. It is a top view which shows arrangement | positioning of the base panel of the floor structure which concerns on 1st Embodiment. It is a perspective view of the floor support tool concerning a 1st embodiment. It is sectional drawing of the floor support tool which concerns on 1st Embodiment. (A) of the state by which the floor support tool which concerns on 1st this embodiment was installed in the base panel is a top view, (B) is a side view of the direction which crosses a joint. It is a disassembled perspective view of the floor support tool concerning a 1st embodiment. It is sectional drawing which shows the longitudinal cross-section of the floor structure and floor support tool which concern on 2nd Embodiment. It is a perspective view of the floor support tool concerning a 2nd embodiment. It is sectional drawing of the floor support tool which concerns on 2nd Embodiment. (A) of the state by which the floor support tool which concerns on 2nd this embodiment was installed in the base panel is a top view, (B) is a side view of the direction which crosses a joint. It is a disassembled perspective view of the floor support tool which concerns on 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Floor structure 14A Ground panel 14 Upper floor material 15 Support panel 16 Floor support 18 Cushion rubber 22 Support bolt 26 Cushion base 26H Adjustment hole 28 Mounting bracket 40 Mass body 50 Mass body 52 Elastic member 60 Floor structure 62 Floor support tool M Joint

Claims (6)

A first elastic member that is supported on the floor slab and is elastically deformable and damps vibration; and a support member that is supported on the first elastic member and extends in a direction opposite to the floor slab. A floor support for supporting a floor material comprising a plurality of base panels and comprising a lowermost layer,
A second elastic member that is supported by the support member, is elastically deformable, and has a size that can be inserted into a joint gap formed between the plurality of adjacent base panels;
A mass body that is supported by the second elastic member, is narrower than the joint gap, is disposed along the joint gap, and is displaced by elastic deformation of the second elastic member to attenuate vibrations;
Floor support. A receiving member disposed between the base panel and the support member;
The floor support according to claim 1, wherein the second elastic member is supported by the support member via the receiving material.   The floor support according to claim 1 or 2, wherein the mass body is disposed on an upper portion of the second elastic member, and the second elastic member is compressed and deformed by displacement of the mass body.   3. The floor support according to claim 1, wherein the mass body is disposed on a side portion of the second elastic member, and the second elastic member undergoes shear deformation by displacement of the mass body. . Floor slabs,
A flooring which is arranged with a gap between the floor slab and the lowermost layer includes a plurality of base panels; and
The floor support tool according to any one of claims 1 to 4, which is disposed on the floor slab and supports the floor material.
With floor structure. A plurality of support main bodies each including a first elastic member supported on the floor slab and elastically deformable to damp vibration, and a support member supported on the first elastic member and extending in a direction opposite to the floor slab. A floor installation method for installing a member for damping vibration to a floor structure supporting a base panel of
A second elastic member that is elastically deformable, and supported by the second elastic member, and has a width narrower than a joint gap formed between the adjacent base panels, and extends along the joint gap. A mass body that is arranged and is displaced by elastic deformation of the second elastic member to damp vibrations is inserted into the joint gap from above the base panel and supported on the support member while being attached to the support member. ,
Floor installation method.

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