JP2010203145A - Floor supporting vibration absorber and floor structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor supporting vibration absorber which makes floor impact sound insulation performance proper, the overall height of which can be set low and which facilitates the adjustment of a vibration control frequency; and to provide a floor structure. <P>SOLUTION: A second elastic member 26 is attached to teh two opposed ends of the top surface of a supporting panel 15. The second elastic member 26 composed of a leaf spring includes an attachment 26A, an arm 26B and a leading end 26C. A mass body 40 is arranged in the recess 26D of the second elastic member 26, and supported on the leading end 26C. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a floor-supported vibration absorber that supports a floor material of a double floor, and a floor structure using the floor-supported vibration absorber.

  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 described in Patent Document 1, a technique for attenuating vibration from the 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. However, in the floor support of Patent Document 1, since the first elastic member and the second elastic member are arranged in series, the height of the floor support becomes high, and there is a limit to dealing with a low floor. . Moreover, in the floor support tool of patent document 1, since it constructs on site after attaching a 1st elastic member, a 2nd elastic member, a mass body, a receiving material, a support bolt, etc., according to the natural vibration frequency of a floor. It is difficult to make adjustments after construction.

JP 2007-04-0093 A

  The present invention has been made in consideration of the above-mentioned facts. The floor impact sound can be cut off satisfactorily, the overall height can be lowered, and the damping frequency can be easily adjusted. It is an object to provide a support vibration absorber and a floor structure.

  A floor-supporting vibration absorber of the present invention described in claim 1 is disposed on a floor slab, is elastically deformable and damps vibrations, is supported on the first elastic member, and the floor It is erected toward a flooring disposed with a gap between the slab, a support member that supports the flooring, and is attached to the lower side of the flooring and extends in a direction approaching the floor slab, A second elastic member that can be elastically deformed; and a mass body that is supported by a distal end portion of the second elastic member and is displaced by elastic deformation of the second elastic member to attenuate vibrations.

  According to the floor support vibration damping device described in claim 1, 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. Since the damped vibration is attenuated by the first elastic member and transmitted to the floor slab, the floor impact sound is well blocked.

  Moreover, since the 2nd elastic member is attached to the lower side of a flooring, it is not necessary to arrange | position in series with a 1st elastic member, and can make the height of a floor support vibration absorber low.

  Moreover, since the mass body is supported by the front-end | tip part of a 2nd elastic member, the weight of a mass body can be changed easily and a damping frequency can be adjusted.

  The floor supporting vibration absorber according to claim 2, wherein the support member is attached and a receiving material supporting the floor material is disposed between the support member and the floor material, and the second elastic member is It is attached to the said receiving material, It is characterized by the above-mentioned.

  Thus, by receiving the flooring with the receiving material and attaching the second elastic member to the receiving material, the second elastic member can be disposed at a position close to the support member, and the vibration can be effectively damped. .

  The floor supporting vibration absorber described in claim 3 is characterized in that the second elastic member is attached to the lower surface of the flooring material at a position separated from the supporting member.

  Thus, by arranging the second elastic member at a position separated from the support member, the first elastic member, the support member, the second elastic member, and the mass body can be easily arranged in parallel. it can.

  The floor structure described in claim 4 is provided with a floor slab, a floor material arranged with an interval from the floor slab, and the floor support vibration absorber according to any one of claims 1 to 3. .

  According to the floor structure of the present invention, floor impact sound can be satisfactorily blocked, the overall height can be lowered, and the damping frequency can be easily adjusted.

  As described above, according to the floor supporting vibration absorber and the floor structure of the present invention, it is possible to satisfactorily cut off the floor impact sound, reduce the overall height, and easily adjust the damping frequency. Can be done.

It is sectional drawing which shows the longitudinal cross-section of the floor structure and floor support vibration absorber which concern on 1st Embodiment. It is a top view which shows arrangement | positioning of the ground panel of a floor structure and floor support dynamic vibration absorber which concern on 1st Embodiment. It is sectional drawing of the floor support vibration damping tool which concerns on 1st Embodiment. It is sectional drawing of the modification of the floor support vibration absorber of 1st Embodiment. It is sectional drawing of the modification of the floor support vibration absorber of 1st Embodiment. It is sectional drawing of the modification of the floor support vibration absorber of 1st Embodiment. It is sectional drawing of the modification of the floor support vibration absorber of 1st Embodiment. It is sectional drawing of the modification of the floor support vibration absorber of 1st Embodiment. It is a top view which shows arrangement | positioning to the base panel of the floor support vibration damping tool shown in FIG. It is sectional drawing which shows the longitudinal cross-section of the floor structure and floor support vibration absorber which concern on 2nd Embodiment. It is a top view which shows arrangement | positioning of the ground panel of a floor structure and floor support dynamic vibration absorber which concern on 2nd Embodiment. It is sectional drawing of the floor support vibration damping tool which concerns on 2nd Embodiment. It is sectional drawing of the modification of the dynamic vibration damper of 2nd Embodiment. It is sectional drawing of the modification of the floor support vibration damping tool which concerns on 2nd Embodiment. It is a top view which shows arrangement | positioning to the base panel of the floor support vibration damping tool shown in FIG.

  [First Embodiment]

  An embodiment of a floor support vibration absorber according to the present invention and a floor structure to which the floor support vibration absorber 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.

  (Floor structure and floor support vibration absorber configuration)

  As shown in FIG. 1, the floor structure 10 includes a plurality of floor support vibration absorbers 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 vibration absorber 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 base panel 14A and the stripping material 14B) excluding the finishing material 14C and the floor support vibration absorber 16 are the floor base 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 of the floor support vibration absorber 16 on the base panel 14A. 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 vibration absorber 16 is disposed so as to straddle the joint M.

  As shown in FIG. 3, the floor support vibration absorber 16 includes a cushion rubber 18 as a first elastic member, a support bolt 22 as a support member, a support panel 15 as a receiving material, a second elastic member 26, 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 is elastically deformable.

  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 is screwed with screws 15N from the upper surface of the base panel 14A. The support panel 15 has a square plate shape, and an adjustment hole 15A is formed at the center.

  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.

  A concave portion 22H for inserting a minus driver is formed at the tip of the support bolt 22, and the minus driver in a state before the stripping material 14B and the finishing material 14C are laid on the base panel 14A of the upper floor material 14. Is inserted into the recess 22H of the support bolt 22 and the support bolt 22 is rotated, so that the height of the base panel 14A from the floor slab 12 can be adjusted.

  Step portions 15 </ b> D are formed at two opposing end portions of the upper surface of the support panel 15. A second elastic member 26 is attached to each of the step portions 15D. The second elastic member 26 is configured by a leaf spring, and has an attachment portion 26A, an arm portion 26B, and a tip portion 26C.

  The attachment portion 26 </ b> A is formed at one end portion of the second elastic member 26 and is disposed on the step portion 15 </ b> D of the support panel 15. The mounting portion 26 </ b> A is fixed to the support panel 15 with screws 27. The arm portion 26B is continuous with the attachment portion 26A and extends obliquely downward (in a direction approaching the floor slab 12) from the end portion of the support panel 15. The distal end portion 26C is continuous with the arm portion 26B, and is bent obliquely upward to form a concave portion 26D. On both sides of the recess 26D, hook-shaped stoppers 26E are provided.

  The mass body 40 is disposed in the recess 26D of the second elastic member 26, and the mass body 40 is supported by the tip end portion 26C. The outer shape of the mass body 40 is shaped along the recess 26D, and the mass body 40 is placed on the recess 26D, and the upper side is pressed by the mounting band 28 that is hooked on the two stoppers 26E and spanned. And attached to the tip 26C.

  As the mass body 40, a metal lump such as iron, a container containing a fluid or solid particles, or any other material that can secure mass can be used.

  The mass body 40 is displaced by elastic deformation of the second elastic member 26 so as to attenuate the vibration from the upper floor material 14, and the second elastic member 26 and the mass body 40 are moved from the upper floor material 14 to the floor slab 12. It functions as a dynamic vibration absorber against vibrations.

  (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 26. Thereby, the second elastic member 26 is elastically deformed, and the mass body 40 moves up and down so as to absorb the vibration, thereby attenuating the vibration. Further, the damped vibration is transmitted to the cushion rubber 18 through the support bolt 22. The damped vibration is further damped by the cushion rubber 18 and transmitted to the floor slab 12. For this reason, a floor impact sound is interrupted | blocked favorably.

  According to this embodiment, since the second elastic member 26 is attached to the lower side of the flooring material and is not arranged in series with the cushion rubber 18, the height of the floor supporting vibration absorber 16 can be reduced.

  Moreover, since the mass body 40 is supported by the front-end | tip part 26C of the 2nd elastic member 26, the mass body 40 can be replaced easily after installation. Therefore, after installation, the damping frequency can be easily adjusted by changing the weight of the mass body 40 or the like.

  In the present embodiment, the second elastic member 26 is attached to the step portion 15D on the upper surface side of the support panel 15, but the second elastic member 26 is attached to the lower surface side of the support panel 15 as shown in FIG. Also good.

  One second elastic member 26 may be attached to only one end of the support panel 15, or three or more second elastic members 26 may be attached.

  In the present embodiment, the mass body 40 is attached to the distal end portion 26C by hooking the attachment band 28 on the stop portion 26E and pressing the mass body 40. However, the mass body 40 may be attached by other methods. Good. For example, as shown in FIG. 5, a hole 26 </ b> H may be drilled in an intermediate portion of the second elastic member 26, and a hook-and-loop fastener 29 may be wound and attached.

  Moreover, in this embodiment, although the 2nd elastic member 26 was comprised with the leaf | plate spring, a 2nd elastic member is not limited to a leaf | plate spring, For example, as shown in FIG. . Also in this case, the cross-sectional shape of the rubber plate 36 is the same as that of the second elastic member 26, and the portions corresponding to the attachment portion 26A, the arm portion 26B, and the tip portion 26C of the second elastic member 26 are respectively attached to the attachment portion 36A. The arm portion 36B and the tip portion 36C may be used. When the rubber plate 36 is used, it is preferable to embed the canvas 37 in the rubber plate 36 for reinforcement.

  In the present embodiment, the example in which the second elastic member 26 is divided into two parts and supported by one support panel 15 has been described. However, as shown in FIG. 7, the two second elastic members 26 are integrated. It is good also as the 2nd elastic member 46 which became. In this case, the step portion 15D is not formed on the support panel 15, the attachment portion 26A is sandwiched between the support panel 15 and the base panel 14A, and the second elastic member 26 is attached with the screws 15N for the support panel 15. be able to.

  In the present embodiment, the upper flooring 14 is supported via the support panel 15. However, the support panel 15 is not always necessary, and as shown in FIG. 8, the support panel 15 is omitted and the support bolts 22 are directly connected to the base panel. The second elastic member 26 may be directly attached to the base panel 14A. As shown in FIG. 9, the floor support vibration absorber 16 in this case can be placed at a position that does not cross the joint M, for example, at the center of the base panel 14 </ b> A and four corner positions. And the base panel 14A is provided with an adjustment hole 14H penetrating in the thickness direction at a position corresponding to the adjustment hole 15A.

  [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. 10, the floor structure 60 of the present embodiment includes a floor support 62 and 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 dynamic vibration absorber 64 is interposed, and a space is formed between the floor slab 12 and the upper floor material 14 by the floor support 62 and the dynamic vibration absorber 64 to obtain a sound insulation effect. In the floor structure 60 of the present embodiment, a floor support vibration absorber 61 is configured by the floor support 62 and the dynamic vibration absorber 64.

  FIG. 11 shows a layout of the base panel 14A, the floor support 62, and the dynamic vibration absorber 64. The floor support 62 is disposed so as to straddle the joint M. As shown in FIG. 11 (A), the dynamic vibration absorbers 64 may be arranged at predetermined intervals in the middle portion of the floor support 62 at the center in the short direction of the base panel 14A. As shown in FIG. 5, the both ends in the short direction may be arranged in the vicinity of the floor support 62 at a predetermined interval.

  As shown in FIG. 12, the dynamic vibration absorber 64 includes a second elastic member 46 and a mass body 40. The second elastic member 46 is configured by a leaf spring, and has a mounting portion 46A, an arm portion 46B, and a tip portion 46C.

  The attachment portion 46A is formed at an intermediate portion of the second elastic member 46, and is fixed to the base panel 14A with screws 15T. The arm portion 46B is continuous to the outside of both end portions of the attachment portion 46A, and extends obliquely downward (in a direction approaching the floor slab 12) from the base panel 14A. The distal end portion 46C is continuous with the two arm portions 46B, and is bent obliquely upward to form a recess 46D. On both sides of the recess 46D, hook-shaped stoppers 26E are provided.

  The mass body 40 is disposed in the recess 46D of the second elastic member 46, and the mass body 40 is supported by the distal end portion 46C. The outer shape of the mass body 40 is shaped along the recess 46D, and the mass body 40 is placed on the recess 46D, and the upper side is pressed by the mounting band 28 that is hooked on the two stoppers 26E and spanned. And attached to the tip 46C.

  The mass body 40 is displaced by elastic deformation of the second elastic member 46 so as to attenuate the vibration from the upper floor material 14, and the second elastic member 46 and the mass body 40 are moved from the upper floor material 14 to the floor slab 12. It functions as a dynamic vibration absorber against vibrations.

  The floor support 62 includes a support panel 15, cushion rubber 18, and support bolts 22. These are the same shapes as in the first embodiment.

  (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 support panel 15, the support bolt 22, and the intermediate receiving member 20. It is transmitted to the floor slab 12 while being attenuated. At this time, the mass body 40 of the dynamic vibration absorber 64 vibrates in the vertical direction so as to cancel the vibration of the upper flooring 14 via the second elastic member 46. Thereby, the vibration transmitted to the cushion rubber 18 is attenuated, and the vibration transmitted from the upper floor material 14 to the floor slab 12 can be reduced.

  In the present embodiment, since the dynamic vibration absorber 64 is arranged separately from the floor support tool 62, the floor support vibration absorption is compared with the case where the dynamic vibration absorber 64 is arranged in series with the floor support tool 62. The height of the tool 61 can be lowered. Therefore, it can also be installed on a low floor where the distance between the lower surface of the upper flooring 14 and the floor slab 12 is short.

  In the present embodiment, two mass bodies 40 are attached to one second elastic member 46, but the arm portion 46B and the tip portion 46C of the second elastic member 46 are formed only on one side of the attachment portion 46A. A configuration in which only one mass body 40 is attached may be employed.

  Moreover, in this embodiment, although the 2nd elastic member 46 was comprised with the leaf | plate spring, as shown in FIG. 13, it can also comprise with the rubber plate 48 similarly to 1st Embodiment. Also in this case, the cross-sectional shape of the rubber plate 48 is the same as that of the second elastic member 46, and the portions corresponding to the attachment portion 46A, the arm portion 46B, and the tip portion 46C of the second elastic member 46 are respectively attached to the attachment portion 48A. The arm 48B and the tip 48C may be used. And the recessed part 48D is comprised inside 48 C of front-end | tip parts, and the mass body 40 is arrange | positioned to the recessed part 48D. When the rubber plate 48 is used, it is preferable to embed the canvas 49 in the rubber plate 48 for reinforcement.

  In the present embodiment, the floor support 62 is attached to the base panel 14A via the support panel 15, but a configuration without the support panel 15 may be employed as shown in FIG. In this case, as shown in FIG. 14, the adjustment hole 14H is formed in the base panel 14A, the panel receiving member 24 is inserted into the hole 14H and fixed, and the support bolt 22 is attached.

  When the support panel 15 is not provided, as shown in FIG. 15, the floor support 62 is disposed at a square with the center of the base panel 14 </ b> A, and the dynamic vibration absorber 64 is disposed at the intermediate portion of the floor support 62. be able to.

  Also in this embodiment, since the mass body 40 is supported by the tip end portion 46C of the second elastic member 46, the mass body 40 can be easily replaced after installation. Therefore, after installation, the damping frequency can be easily adjusted by changing the weight of the mass body 40 or the like.

DESCRIPTION OF SYMBOLS 10 Floor structure 12 Floor slab 14 Upper floor material 22 Support bolt 26 2nd elastic member 26A Attachment part 26B Arm part 26C Tip part 36 Rubber plate 36A Attachment part 36B Arm part 36C Tip part 40 Mass body 46 2nd elastic member 46A Attachment part 46B Arm part 46C Tip part 48 Rubber plate 48A Mounting part 48B Arm part 48C Tip part 60 Floor structure 61 Floor support vibration absorber 62 Floor support tool 64 Dynamic vibration absorber

Claims (4)

A first elastic member disposed on the floor slab and elastically deformable to damp vibrations;
A support member that is supported on the first elastic member and is erected toward a floor material that is disposed with a space between the floor slab and supports the floor material;
A second elastic member attached to the lower side of the flooring material and extending in a direction approaching the floor slab and capable of elastic deformation;
A mass body that is supported by the tip of the second elastic member and is displaced by elastic deformation of the second elastic member to attenuate vibrations;
A floor-supported vibration absorber. Between the support member and the floor material, the support member is attached and a receiving material that supports the floor material is disposed,
The floor supporting vibration absorber according to claim 1, wherein the second elastic member is attached to the receiving member.   The floor supporting vibration absorber according to claim 1, wherein the second elastic member is attached to the lower surface of the floor material at a position separated from the support member. Floor slabs,
A flooring disposed at an interval from the floor slab;
The floor-supporting vibration absorber according to any one of claims 1 to 3,
With floor structure.

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