JP5474378B2 - Floor support and floor structure - Google Patents

Description

  The present invention relates to a floor structure having a double floor via a support member, and a floor support for supporting a floor material of a double floor.

  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 support described in Patent Literature 1, vibration from the floor can be effectively damped using the dynamic vibration absorber. When the floor support described in Patent Document 1 is adopted, the mass body is bonded to the cushion pedestal, so when an impact is applied to the floor, the force in the direction away from the cushion pedestal due to inertial force Works. At this time, since the cushion pedestal and the mass body are bonded, the adhesion of the mass body is easily peeled off. In addition, although a force in the tensile direction acts on the cushion base, generally, a rubber material has a property that it is weaker in tensile force than compression force.

JP 2007-04-0093 A

  The present invention has been made in view of the above facts, and an object of the present invention is to provide a floor support and a floor structure that have good floor impact sound blocking performance and are suppressed from being deteriorated.

The floor support of the present invention according to claim 1 is disposed on a floor slab, is elastically deformable and damps vibrations, and is supported on the first elastic member. A support member that extends to the opposite side of the elastic member and supports the flooring; a second elastic member that is supported by the first elastic member or the support member and is elastically deformable and damps vibration; and the second elasticity A mass body that is supported on the member so as to be separable from the second elastic member and is displaced by elastic deformation of at least one of the first elastic member and the second elastic member to attenuate vibration; and the mass body and the floor A third elastic member interposed between the material and the mass body and the floor material .

  According to the floor support tool of the first aspect, when vibration is applied to the floor material, the mass body supported on the second elastic member moves up and down by inertial force so that the vibration is absorbed. The second elastic member and the third elastic member are alternately elastically deformed to attenuate the vibration from the flooring. 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 the present invention, since the mass body is separable from the second elastic member, the second elastic member is pulled by the mass body even if the mass body moves away from the second elastic member due to inertial force. There is nothing. Therefore, it is possible to suppress deterioration due to tensile deformation of the second elastic member.

  Moreover, in this invention, the mass body which moved to the direction away from the 2nd elastic member compresses and deforms the 3rd elastic member interposed between the flooring and the mass body. Thereby, while being able to attenuate a vibration effectively, the collision with a mass body and a flooring can be prevented.

A floor support tool according to a second aspect of the present invention is disposed on a floor slab, is elastically deformable and damps vibrations, and is supported on the first elastic member. A support member that extends to the opposite side of the elastic member and supports the flooring; a second elastic member that is supported by the first elastic member or the support member and is elastically deformable and damps vibration; and the second elasticity A mass body that is supported on the member so as to be separable from the second elastic member and is displaced by elastic deformation of at least one of the first elastic member and the second elastic member to attenuate vibration; and the mass body and the floor And a blocking member disposed between the floor material and the third elastic member to prevent relative movement of the third elastic member in a direction approaching the floor material. When, wherein the third elastic member, the blocking member Fine the mass body and are arranged in contact.

  By blocking the relative movement of the third elastic member in the direction approaching the floor material with the blocking member, it is possible to prevent the third elastic member from largely moving and colliding with the floor material.

Further, by bringing the third elastic member and the blocking member into contact in this way, it is possible to suppress an impact caused by the third elastic member hitting the blocking member together with the mass body when an impact is input.

A floor structure according to a third aspect includes a floor slab and the floor support according to the first or second aspect disposed on the floor slab.

According to the floor structure of claim 3 , it is possible to satisfactorily block the floor impact sound from the floor material while preventing the tensile force from acting on the second elastic member.

  As described above, according to the floor support and the floor structure of the present invention, it is possible to prevent deterioration while improving the performance of blocking floor impact sound.

It is sectional drawing which shows the longitudinal cross-section of the floor structure concerning this embodiment. It is the expanded sectional view which expanded the floor support of this embodiment. It is a perspective view of the floor support tool concerning this embodiment. It is operation | movement explanatory drawing of the floor support tool of this embodiment. It is sectional drawing which shows the modification of the floor support tool of this 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.

  2, 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 buffer member as a third elastic member. 30 and a mass body 40.

  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.

  A support panel 15 is disposed below the base panel 14A 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. Thus, the upper flooring 14 is disposed with a space between the floor slab 12.

  As shown in FIG. 3, a concave portion 22M for inserting a flathead screwdriver is formed at the tip of the support bolt 22, and before the stripping material 14B and the finishing material 14C are placed on the base panel 14A of the upper floor material 14. In this state, the height of the base panel 14A from the floor slab 12 can be adjusted by inserting a flathead screwdriver into the recess 22M of the support bolt 22 and rotating the support bolt 22.

  A cushion pedestal 26 is bonded to the receiving surface 20 </ b> C that is the upper surface of the flange portion 20 </ b> A of the intermediate receiving member 20. That is, the lower surface of the cushion pedestal 26 is fixed to the receiving surface 20C. The cushion pedestal 26 is made of a rubber material. The cushion base 26 and the intermediate receiving member 20 can be bonded by vulcanization bonding. The cushion pedestal 26 is cylindrical and has an insertion hole 26A formed in the center, and the support bolt 22 is inserted into the insertion hole 26A. The cushion pedestal 26 is supported by the support bolt 22 via the intermediate receiving member 20 in order to attenuate the vibration from the upper flooring 14, and is made of soft rubber and can be elastically deformed. A mass body 40 is placed on the cushion base 26.

  As shown in FIG. 3, the mass body 40 has a cylindrical shape, and a recess 42 is formed at the center of the lower surface 40 </ b> A in the installed state. The recess 42 is configured as a cylindrical shape that is coaxial with the central axis of the mass body 40.

  The mass body 40 has a support hole 42 </ b> A extending from the center of the recess 42 to the upper surface 40 </ b> B side of the mass body 40. The mass body 40 is placed and supported on the cushion base 26 by inserting the support bolt 22 through the support hole 42A from the concave portion 42 side. A load in the compression direction acts on the cushion base 26 by the mass body 40. The cushion base 26 and the mass body 40 are not fixed and can be separated from each other.

  In the above installed state, the cushion base 26 is accommodated in the recess 42. Thereby, the thickness of the cushion base 26 can be absorbed by the mass body 40, and the height of the floor support 16 can be lowered. The buffer member 30 is placed on the mass body 40.

  As shown in FIG. 3, the buffer member 30 has a cylindrical shape, and an insertion hole 30A is formed at the center. The buffer member 30 is made of a rubber material. A disc-shaped restricting plate 32 is disposed on the side surface opposite to the mass body 40 of the buffer member 30.

  An insertion hole 32A is formed in the central portion of the restriction plate 32, and a female screw 32B that can be screwed with the male screw portion 22B of the support bolt 22 is formed on the inner peripheral surface of the insertion hole 32A. The restriction plate 32 can be made of metal, resin, or the like.

  The buffer member 30 is placed on the mass body 40 with the support bolt 22 inserted through the insertion hole 30 </ b> A. The buffer member 30 is not fixed to the mass body 40. The restricting plate 32 is screwed into the female screw 32B of the insertion hole 32A and the male screw 22B of the support bolt 22, and is disposed at a position where it comes into contact with the upper surface of the buffer member 30. Thereby, the buffer member 30 is arrange | positioned between the mass body 40 and the control board 32, contacting both.

  The mass body 40 is displaced by the elastic deformation of the cushion pedestal 26 and the elastic deformation of the buffer member 30 so as to attenuate the vibration from the upper floor material 14. The cushion pedestal 26 and the mass body 40 are composed of the upper floor material. It functions as a dynamic vibration absorber for vibrations from 14 to the floor slab 12.

  (Construction procedure of this embodiment)

  Next, a construction procedure for constructing the double floor structure 10 using the floor support 16 shown in FIG. 2 will be described.

  First, the integrated cushion rubber 18, intermediate receiving member 20, and cushion pedestal 26 are installed on the floor slab 12 with the cushion rubber 18 facing down.

  Next, the cylindrical portion 24 </ b> B of the panel receiving member 24 is press-fitted into the adjustment hole 15 </ b> A of the supporting panel 15, the supporting panel 15 is disposed on the flange portion 24 </ b> A, and the supporting panel 15 is fixed to the panel receiving member 24.

  Next, the support bolt 22 is inserted into the insertion hole 26 </ b> A of the cushion base 26 from above, and the male screw portion 22 </ b> A of the support bolt 22 is screwed to the female screw portion 20 </ b> B of the intermediate receiving member 20 to be attached and erect.

  Next, the support bolt 22 is inserted into the support hole 42 </ b> A of the mass body 40 from below, the mass body 40 is placed on the cushion base 26, and the mass body 40 is supported on the cushion base 26.

  Next, the support bolt 22 is inserted into the insertion hole 30 </ b> A of the buffer member 30, and the buffer member 30 is disposed on the mass body 40. Then, the male screw 22 </ b> B of the support bolt 22 is screwed into the female screw 32 </ b> B of the restricting plate 32, and is disposed at a position where it abuts on the upper surface of the buffer member 30.

  Next, the female screw portion 24C of the panel receiving member 24 is screwed into the male screw portion 22B of the support bolt 22. Then, the base panel 14 </ b> A is laid on the support panel 15. Here, the height of the base panel 14 </ b> A from the floor slab 12 is adjusted by inserting a flathead screwdriver into the recess 22 </ b> M of the support bolt 22 and rotating the support bolt 22.

  Next, 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 rubber 18 via the panel receiving member 24, the support bolt 22, and the intermediate receiving member 20. As a result, as shown in FIG. 4A, the cushion rubber 18 is compressed and deformed, and the cushion base 26 sinks to the floor slab 12 side. Further, the regulation plate 32 fixed to the support bolt 22 also sinks to the floor slab 12 side together with the support bolt 22. At this time, the mass body 40 relatively moves in a direction away from the cushion base 26 due to inertial force. Thereby, the buffer member 30 is compressed and deformed between the regulation plate 32 and the mass body 40. At this time, since the cushion pedestal 26 is not bonded to the mass body 40, the cushion pedestal 26 can move in the opposite direction to the mass body 40, and no tensile force acts on the cushion pedestal 26.

  Subsequently, when the reaction force of the cushion rubber 18 is applied, as shown in FIG. 4B, the cushion base 26 moves upward and is compressed by the mass body 40 to be compressed and deformed. In this way, the mass body 40 moves up and down so as to absorb vibration while compressing and deforming both between the cushion base 26 and the buffer member 30, thereby damping the vibration.

  According to this embodiment, since only the compressive force acts on the cushion base 26 from the mass body 40 and no tensile force acts on the cushion pedestal 26, it is possible to prevent peeling of the bonded portion due to tension. Further, deterioration due to the tensile deformation of the cushion base 26 can also be suppressed.

  Moreover, in this embodiment, since the buffer member 30 is disposed between the support panel 15 and the mass body 40, the mass body 40 is prevented from colliding with the support panel 15 away from the cushion base 26, The buffer member 30 can be compressed and deformed to absorb the vibration.

  In the present embodiment, the restriction plate 32 is provided, but the restriction plate 32 is not necessarily required. In particular, by providing the regulating plate 32, the relative movement between the buffer member 30 and the support bolt 22 can be prevented, and vibration can be effectively damped. Further, by using the regulation plate 32, the distance between the support panel 15 and the buffer member 30 can be easily adjusted.

  In the case where the restriction plate 32 is not provided, the relative movement between the buffer member 30 and the support bolt 22 is prevented by setting the buffer member 30 to a thickness that makes contact with the support panel 15 as shown in FIG. Thus, vibration can be effectively damped.

  In the present embodiment, the cushion base 26 and the mass body 40 are disposed so as to surround the support bolt 22, and therefore elastically deform along the support bolt 22 and move along the support bolt 22. The action of dynamic vibration is stabilized.

  In addition, since the mass body 40 has a cylindrical shape, the interference range in the horizontal direction can be narrowed as compared with the case where a mass body having the same mass and another shape is used.

  Moreover, since the recessed part 42 is comprised in the lower surface of the mass body 40, and the cushion base 26 is accommodated in the recessed part 42, the height of the floor support 16 can be made low by the height of the cushion base 26.

  In the present embodiment, an example in which the mass body 40 has a columnar shape has been described. However, the mass body is not limited to a columnar shape, and may have another shape such as a prism.

  Further, the buffer member 30 does not need to have a cylindrical shape, and may have another shape such as a prism.

  Moreover, although the case where the floor slab 12 is a concrete floor made of concrete has been described in the present embodiment, the floor slab may be another floor slab such as wooden.

DESCRIPTION OF SYMBOLS 10 Floor structure 12 Floor slab 14 Upper floor material 16 Floor support 18 Cushion rubber 22 Support bolt 26 Cushion base 30 Buffer member 32 Control board 40 Mass body

Claims (3)

A first elastic member disposed on the floor slab and elastically deformable to damp vibrations;
A support member supported on the first elastic member and extending to the opposite side of the first elastic member to support a flooring;
A second elastic member supported by the first elastic member or the support member, elastically deformable and dampening vibration;
A mass body that is supported on the second elastic member so as to be separable from the second elastic member, and is displaced by elastic deformation of at least one of the first elastic member and the second elastic member to attenuate vibrations;
A third elastic member interposed between the mass body and the floor material so as to contact the mass body and the floor material ;
A floor support device comprising: A first elastic member disposed on the floor slab and elastically deformable to damp vibrations;
A support member supported on the first elastic member and extending to the opposite side of the first elastic member to support a flooring;
A second elastic member supported by the first elastic member or the support member, elastically deformable and dampening vibration;
A mass body supported on the second elastic member so as to be separable from the second elastic member, and displaced by elastic deformation of at least one of the first elastic member and the second elastic member to attenuate vibrations;
A third elastic member interposed between the mass body and the flooring;
A blocking member disposed between the floor material and the third elastic member to prevent relative movement of the third elastic member in a direction approaching the floor material;
With
The third elastic member is a floor support member arranged in contact with the blocking member and the mass body . Floor slabs,
The floor support according to claim 1 or 2, which is disposed on the floor slab,
With floor structure.

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