JP2001081891A - Sound insulation floor structure in building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure capable of reducing vibration noise to a residence space on a lower story, by providing a receiving fitting on the upper surface of a reverse beam of a skeleton in a reverse beam structure, fitting the lower end of a sleeper via an elastic buffer body, and laying a floor plate in the upper part via a floor joist. SOLUTION: A horizontal skeleton portion for partitioning a building to a plurality of upper and lower stories is constructed in a reverse beam structure in which a plurality of reverse beams Rb integrally project upward on the upper surface of a floor slab. On the reverse beams Rb, a plurality of sleepers 1 aligned in parallel with each other are bridged and supported, a plurality of floor joists 2 aligned orthogonally in parallel with each other are bridged and supported, and a lattice-like floor frame is constructed. A floor plate 3 is laid, and a partition over a floor and a partition under the floor are formed. A basis 4 is longitudinally laid on the reverse beam Rb, and receiving fittings 5 are fastened via nails 6 in the same interval as an arranging interval of the sleepers 1. An elastic buffer body 7 made of rubber is removably fitted into an opening 5B, and the lower end of the sleeper 1 is engaged and supported on a recessed part 7C. Thus, vibration of a floor plate can be effectively absorbed, and noise to a lower story can be reduced as low as possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound-insulating floor structure for a building having a so-called inverted beam structure concrete body in which inverted beams are projected on a floor slab.

[0002]

2. Description of the Related Art In recent years, in apartment houses such as condominiums, vibrations applied to the floor above the floor are transmitted as vibration noise to the living space below the floor through the floor structure and the skeleton. The mainstream is to use flooring made of wood or the like directly as a floor surface without laying a rug such as a carpet, which has a tendency to further increase the vibration noise transmitted from the floorboard downstairs. Sound insulation measures are a major issue.

Conventionally, in a building having a concrete frame having a so-called regular beam structure in which a regular beam protrudes downward on a floor slab, as shown in FIG. At the same time, the bundle 01 is anchored to the edge of the skeleton, and the edge joists 02 are anchored on the edge of the frame, and the edge joists 03 are anchored onto the joist 02 at that time. A floorboard is laid on the joist 03.

[0004]

As described above, the above-mentioned conventional building has a structure in which the floorboard and the concrete frame are directly and integrally connected via the bundle and the joist. Vibration applied to the floorboard of the floor is transmitted directly to the frame below the floor through the bundle and the joist, which causes large vibration noise in the living space below the floor.

[0005] The present invention has been made in view of such circumstances, and by using a concrete frame having a reverse beam structure in which a reverse beam is projected upward on a floor slab, and by improving the floor structure, An object of the present invention is to provide a sound insulation floor structure in a building capable of reducing vibration noise from a floor plate on the floor to a living space below the floor as much as possible.

[0006]

In order to achieve the above object, a first aspect of the present invention is to provide a horizontal frame part which divides a building into each story, and a vertical frame part extending vertically from the horizontal frame part. And a vertical frame extending upward is integrally formed on the horizontal frame, and a floor frame composed of a giant pull and a joist is erected on the vertical beam.
A floorboard is laid on this floor frame, and a space above the floor is placed on this floorboard.
In a building having an underfloor space under a floorboard, the building has a pair of guide pieces that are erected at an interval from each other.
An elastic buffer having a concave cross section is fitted to the metal fitting on the inverted beam, and both sides of the elastic buffer are in contact with the pair of guide pieces. The lower end portion of the large pulley is directly fitted into the open concave portion from above, and an elastic buffer is interposed between the lower surface of the large pulley and the inverted beam and between the side face of the large pulley and the guide piece, respectively. Further, a gap is formed between the edge of the large pulley and the vertical frame portion. According to this feature, the vertical and horizontal vibration and impact forces acting on the floor plate are elastically damped. The body acts as a force in the compression direction to effectively absorb and absorb, and the edge of the large pulley is separated from the vertical body with a gap. Is no longer transmitted directly from the edge to the vertical frame, and Noise and vibration transmission can be reduced as much as possible to, the top, it is possible to increase the lifetime of the elastic buffer body significantly. Furthermore, the fitting to the elastic buffer can be performed simply by fitting the lower end of the large buffer into the concave portion of the elastic buffer fitted to the metal fitting on the reverse beam, so that the large assembling operation becomes easy.

According to a second aspect of the present invention, in addition to the features of the first aspect of the present invention, the receiving member includes a seat plate in which an elastic buffer plate mounted on the inverted beam is joined to a bottom surface, The pair of guide pieces are integrally provided on the seat plate. As a result, the vibration transmitted from the pulling through the elastic buffer to the metal fitting is effectively prevented from being transmitted from the metal fitting to the inverted beam, and the vibration noise transmission to the downstairs is more effectively performed. Reduced.

According to a third aspect of the present invention, in addition to the features of the first aspect of the present invention, the metal fitting is supported on the inverted beam so as to be able to move up and down. The height of the floor structure can be easily adjusted.

According to a fourth aspect of the present invention, in addition to the features of the first or third aspect of the present invention, the receiving member and a seat plate having an elastic buffer plate mounted on the inverted beam joined to a bottom surface are provided. Between,
It is characterized by interposing a position adjusting mechanism for supporting the metal fitting on the seat plate so as to be able to move up and down, whereby the vibration transmitted from the large scale to the metal fitting via the elastic buffer is transmitted from the metal fitting to the metal fitting. The transmission on the reverse beam via the position adjustment mechanism and the seat plate is effectively avoided, and the transmission of vibration noise to the downstairs is more effectively reduced.

According to a fifth aspect of the present invention, in addition to the features of any one of the first to fourth aspects, an edge of the large pulley is provided.
An elastic cushioning member for an end portion is interposed in the gap between the vertical body portion opposed to the vertical body portion. As a result, even if the size of the gap between the edge of the heavy duty and the vertical frame part facing it fluctuates due to variations in the construction work, etc., the edge of the heavy duty directly contacts the vertical frame part. Since the contact can be reliably prevented, the transmission of vibration from the large edge to the vertical frame portion is effectively suppressed, and the transmission of vibration noise to the downstairs is more effectively reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

First, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a partially cutaway plan view of a sound insulation floor structure in a building according to the present invention, FIG. 2 is a sectional view taken along line 22 in FIG.
3 is a sectional view taken along line 3-3 in FIG. 1, FIG. 4 is an enlarged view of a portion surrounded by an imaginary line as viewed in the direction of arrow 4 in FIG. 2, and FIG.
FIG. 6 is a cross-sectional view taken along line 5, and FIG. 6 is a perspective view of the elastic buffer and the metal fitting.

A concrete frame F having a reverse beam structure, which forms the framework of a building such as an apartment house, extends in the horizontal direction to partition the building into a plurality of upper and lower layers, and a vertical frame portion Fh extending in the vertical direction. And a vertical body part Fv interconnecting the horizontal body parts Fh.

The horizontal frame portion Fh has a so-called inverted beam structure in which a plurality of inverted beams Rb are integrally and projecting upward from the upper surface of the floor slab S.

In the living space L defined by the vertical frame part Fv, a plurality of metal pulleys 1 arranged in parallel with each other are supported on the reverse beam Rb by a bridge. A plurality of joists 2 made of wood or the like arranged orthogonally to each other and parallel to each other are bridge-supported to form a grid-like floor frame Ff, and a floor plate 3 is laid on the floor frame Ff. .

An under-floor section SU is formed on the floor plate 3, and an under-floor space SD used for storage is formed under the floor plate 3, respectively.

The floor frame Ff and the floorboard 3 are
The concrete frame F is floatingly supported so as not to be in direct contact with the concrete frame F so that the vibration generated on the floor plate 3 is not transmitted to the living space L downstairs via the frame F. The configuration of the sound insulation support structure for the frame F of the floor frame Ff and the floor panel 3 will be described in detail.

As shown in FIGS. 4 and 5, the vertical body portion Fv
A wooden base 4 is laid along the longitudinal direction of the inverted beam Rb adjacent to. On this base 4, metal fittings 5 are nailed 6 at the same interval as the arrangement interval of the large pull 1.

As is clearly shown in FIG. 6, the metal fitting 5 is made of metal, and is formed by cutting and raising a pair of guide pieces 5C upward from an opposite edge of an opening 5B of a frame-shaped substrate 5A. Have been. A rubber elastic buffer 7 is detachably fitted into the opening 5B. The elastic buffer 7 has a substantially horizontal base 7A and left and right upright portions 7B which stand substantially vertically from both ends thereof, and has a concave cross section. The outer surfaces of the left and right upright portions 7B are formed by the pair of guides. It is supported in contact with the piece 5C. In addition, the bottom surface of the elastic buffer 7 penetrates through the opening 5B and is directly mounted on the upper surface of the base 4.

The concave portion 7C of the elastic buffer 7 has a large
Is fitted and supported. As is clearly shown in FIG. 5, the puller 1 is constructed by integrally connecting upper and lower ends 1B of a channel-shaped cross section with open edges at upper and lower portions of a vertical portion 1A extending in the vertical direction. Each end 1B is composed of an inclined part a following the vertical part 1A and a U-shaped part b following the inclined part a. The free end of the U-shaped part b is inclined toward the vertical part 1A. And a gap c is formed between them. Then, the lower end portion 1B of the large pulley 1 is fitted from above the elastic buffer 7 into a concave portion 7C of the elastic buffer 7 as shown in FIG.

As described above, the lower end 1B of the pulley 1 is
The elastic buffer 7 is floatingly supported on the reverse beam Rb of the frame F via the elastic buffer 7, and the elastic buffer 7 is fixedly supported by the metal fitting 5 and does not move with respect to the reverse beam Rb. Moreover, a gap 13 exists between the edge of the large structure 1 and the wall of the frame F (vertical frame portion Fv).
Has no place in direct contact with the frame F.

The middle portion of the pulley 1 is also floatingly supported on the reverse beam Rb by the same support structure as described above.

As described above, a wooden joist 2 is supported on the pulley 1 at right angles thereto, and a floor plate 3 is laid on the joist 2. A wall covering 10 is provided around the periphery of the floor board 3 so as to surround the floor board 3, and a body edge 11 is interposed between the wall covering 10 and the frame F.

As shown in FIG. 3, the joist 2 on the pulling bar 1 is
The outer joist 1 is overhanged, and the end of the joist 2 is supported on the inverted girder Rb ₁ of the frame F via the elastic buffer mechanism 12. A gap 13 is also formed between the edge of the joist 2 and the frame F.

Next, the operation of the first embodiment of the present invention shown in FIGS. 1 to 6 will be described. When an object or the like is dropped on the floor plate 3 and vibration is applied thereto, the vibration is It is transmitted from the floorboard 3 to the pulling 1 via the joist 2 and further transmitted from the pulling 1 to the frame F constituting the ceiling part of the lower floor via the base 4 in a state of being greatly attenuated by the elastic buffer 7. Is done.

As shown in FIGS. 5 and 6, the elastic buffer 7 has a concave cross section, and holds the lower end 1B of the large pulley 1 so as to engage the large pulley 1. Both the vertical and horizontal vibration and impact force can be received as a force in the direction of compression by the base 7A and the right and left upright portions 7B having a predetermined width, and the vibration can be absorbed and absorbed very effectively. In addition, the elastic buffer 7 can receive most of the vibration and impact force as simple vertical and horizontal compressive forces, and its durability can be enhanced. Bad nature).

Further, as shown in FIG.
Since the frame F is separated from the frame F with the gap 13 therebetween, the vibration applied to the pull 1 is not directly transmitted to the frame F from the edge.

Further, since the elastic buffer 7 is supported by the metal receiving member 5 and does not move more than necessary, the durability of the elastic buffer 7 is also enhanced, and the pulley 1 is relatively thick. Despite being supported on the frame F via the elastic buffer 7, it is stable and has no useless movement.
Further, the pulling pulley 1 is configured such that the elastic buffer 7
By simply fitting into the concave portion 7C, the assembly to the elastic buffer 7 can be performed, so that the assembling workability is extremely good.

Next, the second embodiment of the present invention will be described with reference to FIGS.
An example will be described.

FIG. 7 is a sectional view of the sound-insulating floor structure, FIG. 8 is a sectional view taken along the line 8-8 in FIG. 7, and FIG. 9 is a perspective view of the metal fitting. The same reference numerals are given to the same members.

In the second embodiment, the metal fitting 5 for supporting the pulling pulley 1 can be moved up and down with respect to the frame F. This metal fitting 5 is provided at both ends of the substrate 5A having no opening. A protruding portion 5D is formed to be bent substantially horizontally from the upper edge of the left and right guide pieces 5C that stand more. A seat plate 15 is nailed to the base 4 on the frame F, and a pair of adjusting screws 16 extending in the vertical direction are rotatably supported by the seat plate 15. A nut 17 fixed to the overhang 5D of the receiving member 5 is screwed into these adjustment screws 16. Therefore, by rotating and adjusting the pair of adjusting screws 16, the vertical position of the receiving fitting 5 can be adjusted. An elastic buffer 7 is fitted in the concave portion of the receiving member 5, and the lower end 1B of the large pulley 1 is detachably fitted and supported in the concave portion 7C of the elastic buffer 7 from above.

In the second embodiment, the same operation and effect as those of the first embodiment can be obtained, and the pair of adjusting screws 16 can be rotationally adjusted by a tool such as a screwdriver. Thus, the vertical position of the pulling bar 1 can be adjusted.

Next, a third embodiment of the present invention will be described with reference to FIGS.

FIG. 10 is a view corresponding to FIG. 4, FIG. 11 is a sectional view taken along line 11-11 of FIG. 10, and FIG.
FIG. 13 is a cross-sectional view taken along line 12 and FIG. 13 is a perspective view of the elastic buffer and the receiving member. In the figure, the same members as those in the first embodiment are denoted by the same reference numerals.

In the third embodiment, the receiving member 5 is joined to a substrate 5A having a structure similar to that of the substrate 5A of the first embodiment by a suitable fixing means such as welding on the bottom surface of the substrate 5A. The base plate 7b is made up of a metal seat plate Pb that closes the opening 5B of 5A, and the base 7A of the elastic buffer 7 is placed on the seat plate Pb. An elastic buffer plate Pr made of a rubber material is joined to the bottom surface of the seat plate Pb by an appropriate fixing means such as adhesion or baking, and the seat plate Pb, that is, the substrate 5A is placed on the inverted beam Rb via the elastic buffer plate Pr. Placed on A large number of engagement grooves 20 or engagement recesses are formed on the lower surface of the elastic buffer plate Pr, that is, the contact surface with the upper surface of the inverted beam Rb.
The buffer plate Pr (seat plate Pb) can be effectively prevented from sliding along the upper surface of the reverse beam Rb. The engagement groove 20 or the engagement recess may be omitted as necessary.

As in the previous embodiment, a wooden joist 2 is supported on the gallery 1 at right angles to the gallery 1, and a floor panel 3 is laid on the joist 2. In this embodiment, the floorboard 3 is formed by laminating a finishing material 21 and a support plate 22 joined to the lower surface thereof, and a skirting board 23 is erected on the upper surface of the floorboard 3 near the periphery thereof. The lower end of the wall covering material 10 arranged so as to surround the floorboard 3 is in contact with the outer surface of the baseboard 23. A rim 24 functioning as a spacer is interposed and fixed between the wall covering 10 and the frame F.

In the gap 13 between the edge of the pulley 1 and the vertical frame portion Fv of the frame F opposed to the edge, an end elastic buffer E made of rubber material is interposed. The elastic cushioning member E for the end portion may be fixed to the edge of the large pulley 1 by bonding or the like as shown in the illustrated example, or may be detachably locked by a suitable locking means (not shown). Alternatively, it may be simply sandwiched between the edge of the pulley 1 and the vertical frame portion Fv. In the illustrated example, the end elastic cushion E extends above the pulley 1 and intervenes between the edge of the floor plate 3 and the vertical frame portion Fv. The elastic protrusions E for the end portions are provided with engaging projections E which fit into the gaps between the large pulley 1 and the floor plate 3.
a is formed integrally.

In the third embodiment, the same basic functions and effects as those of the first embodiment are achieved. Moreover,
An elastic buffer plate Pr is joined to the bottom surface of the seat plate Pb of the receiving member 5, and the receiving member 5 is placed on the inverted beam Rb via the elastic buffer plate Pr. Vibration transmitted to the metal fitting 5 side via the metal fitting 5 is effectively prevented from being transmitted from the metal fitting 5 to the reverse beam Rb, whereby the transmission of vibration noise to the downstairs is further effectively reduced.

The gap 13 between the edge of the pulley 1 and the vertical frame portion Fv facing the edge is provided with an elastic buffer E for the end.
Therefore, even if the size of the gap 13 fluctuates due to variations in construction work, etc., it is possible to reliably prevent the edge of the large pulley 1 from directly contacting the vertical frame portion Fv. Thereby, the transmission of vibration from the pulling pulley 1 to the vertical frame portion Fv is effectively suppressed, and the transmission of vibration noise to the downstairs is more effectively reduced.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 14 is a diagram corresponding to FIG.
FIG. 15 is a sectional view taken along the line 15-15 of FIG.
FIG. 16 is a perspective view (corresponding to FIG. 13) of the elastic shock absorber and the metal receiving member. In the drawing, the same members as those in the second and third embodiments are denoted by the same reference numerals.

In the fourth embodiment, similar to the second embodiment,
A pair of position adjustment mechanisms Aj that support the metal fitting 5 so that the metal fitting 5 can be moved up and down are provided between the metal fitting 5 and the seat plate 15. As in the second embodiment, the position adjusting mechanism Aj is connected to the seat plate 15 so as to be rotatable and supported and extends in the vertical direction. A nut 17 for screwing the adjustment screw 16 is provided. A lock nut 18 for locking the adjustment position is screwed to each adjustment screw 16. In addition, this lock nut 1
8 can be omitted as in the second embodiment.

An elastic buffer plate Pr made of a rubber material is joined to the bottom surface of the seat plate 15 over the entire surface thereof by an appropriate fixing means such as bonding or baking, and the seat plate 15 is connected via the elastic buffer plate Pr. Is mounted on the reverse beam Rb. A large number of engagement grooves 20 or engagement recesses are formed on the lower surface of the elastic buffer plate Pr, that is, the contact surface with the reverse beam Rb, and the buffer plate Pr (seat plate 15) is formed along the upper surface of the reverse beam Rb. Can effectively be prevented from sliding. The engagement groove 2
The zero or the engagement recess may be omitted as necessary.

In the gap 13 between the edge of the pulley 1 and the vertical frame portion Fv of the frame F opposed to the edge, the same end elastic buffer E as in the third embodiment is interposed. .

In the fourth embodiment, an elastic buffer plate Pr is joined to the bottom surface of the seat plate 15 provided with the lifting / lowering position adjusting mechanism Aj between the metal fitting 5 and the elastic buffer plate Pr. Since the receiving member 5 is mounted on the inverted beam Rb, the vibration transmitted from the large pulley 1 to the receiving member 5 via the elastic buffer 7 is inverted from the receiving member 5 via the position adjusting mechanism Aj and the seat plate 15. Transmission on the beam Rb is effectively avoided.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. FIG. 17 is a diagram corresponding to FIG.
18 is an enlarged sectional view taken along line 18-18 in FIG. 17, and FIG. 19 is a view corresponding to FIG. 18 showing a modification of the seat plate.
The same members as those in the fourth embodiment are denoted by the same reference numerals.

In the fifth embodiment, similar to the fourth embodiment,
A pair of position adjusting mechanisms Aj 'for supporting the metal fitting 5 so as to be able to move up and down is provided between the metal fitting 5 and the seat plate 15', and the seat plate 15 'is provided for each position adjusting mechanism Aj'. Provided independently. Each seat plate 15 'is formed in a rectangular shape as shown in FIG. 18, and the head (lower end) of an adjusting screw 16' is fixed to the upper surface of the central portion by welding or the like.
Is rotated, the seat plate 15 'also rotates integrally. When the adjusting screw 16 'is rotated with the lock nut 18 removed, the nut 17 screwed to the screw 16' (therefore, the metal fitting 5 in which the nut 17 is fixed to the overhang portion 5D) moves up and down. The height of the lever is adjustable, and the adjustment position is locked by the lock nut 18. The lock nut 1
8 can be omitted as in the second embodiment.

On the bottom surface of each seat plate 15 ', an elastic buffer plate Pr made of rubber material of the same shape is joined over the entire surface by an appropriate fixing means such as adhesion, baking or the like, and via this elastic buffer plate Pr. Each seat plate 15 'is placed on the inverted beam Rb. A large number of engagement grooves 20 or engagement recesses are formed on the lower surface of the elastic buffer plate Pr, that is, the contact surface with the reverse beam Rb, and along the upper surface of the reverse beam Rb, the buffer plate Pr (seat plate 15 ') is formed. )
Can effectively be prevented from sliding.
The engagement groove 20 or the engagement recess may be omitted as necessary.

The shape of each seat plate 15 'is not limited to that shown in FIG. 18, and various shapes can be selected. For example, the shape may be circular as shown in FIG. Are also formed in a circular shape.

Although not shown, also in this embodiment, the edge of the large pulley 1 and the vertical frame portion F of the frame F facing the edge.
An elastic cushioning member E for the end portion similar to that of the third and fourth embodiments is interposed in the gap 13 between them.

Thus, in the fifth embodiment as well, basically the same functions and effects as in the fourth embodiment are achieved.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various embodiments are possible within the scope of the present invention. For example, the elastic buffer 7, the elastic buffer plate Pr, and the end elastic buffer E
In addition to the rubber material, it may be made of an elastic body of another material such as a synthetic resin.

In the third to fifth embodiments, the elastic buffer plates Pr joined to the bottom surfaces of the seat plates Pb, 15, 15 'of the metal fitting 5 are provided.
Is simply placed on the upper surface of the reverse beam Rb and is not fixed, but in the present invention, the elastic buffer plate Pr
May be adhered to the inverted beam Rb as necessary, or may be fixed by an appropriate fixing means such as a screw means. For example, FIG. 20 shows an example in which the seat plate Pb, 15 or 15 'of the receiving member 5 is fixed on the reverse beam Rb using the stud bolt 30 implanted in the reverse beam Rb. The upper part of the stud bolt 30 has an elastic buffer plate Pr and a seat plate P
b, 15 or 15 ', and extends upward. A seat nut 31 is screwed into the upper end of the seat nut 31 and the washer 31a of the nut 31 and the seat plate Pb, 15 or 15'. Is provided with an anti-vibration pad 32 made of an elastic material such as rubber. On the lower surface of the anti-vibration pad 32, a seat plate Pb,
A cylindrical bush portion 32a is formed integrally with the seat plate Pb, 15 or 15 'to prevent direct contact with the stud bolt 30 by being inserted into the bolt insertion hole 33 formed in the bolt 15 or 15'. Thus, even if the seat plate Pb, 15 or 15 'is fixed to the inverted beam Rb by using the stud bolt 30, the seat plate Pb, 15 or 15' directly contacts the bolt 30 or the inverted beam Rb. Therefore, the transmission of vibration from the metal fitting 5 side to the reverse beam Rb side is effectively suppressed.

In the third embodiment, the substrate 5A of the metal receiving member 5 and the seat plate Pb are formed as separate members and then connected to each other. In the present invention, both of them are combined. It may be integrally formed without a seam.

Further, in the third to fifth embodiments, the gap 13 between the edge of the large pulley 1 and the vertical body portion Fv facing the edge is large.
Although the elastic cushioning member E for the end portion is interposed in the above, the direct contact between the edge of the large pulley 1 and the vertical frame portion Fv (therefore, vibration transmission therebetween) is reliably prevented. In the case where the gap 13 can be surely ensured due to a variation in the construction work, the elastic cushioning member E for the end portion may be omitted.

[0056]

As described above, according to the first aspect of the present invention, the vibration and impact force applied to the floor plate can be applied to the elastic absorber as a force in the compression direction. The vibration can be effectively absorbed by the elastic absorber, and the noise downstairs can be reduced as much as possible. The height can be increased, and furthermore, the elastic buffer can be easily assembled on the large scale.

According to the second aspect of the present invention, the elastic cushioning plate mounted on the inverted beam is joined to the bottom surface of the seat plate of the metal fitting. Can be effectively prevented from being transmitted from the metal fitting to the reverse beam, and therefore, the transmission of vibration and noise downstairs can be more effectively reduced.

According to the third aspect of the present invention, since the metal fitting is supported on the inverted beam so as to be able to adjust up and down, it is easy to adjust the height of the floor structure with respect to the frame.

According to the fourth aspect of the present invention, the elastic cushioning plate mounted on the inverted beam is joined to the bottom surface of the seat plate provided with a mechanism for adjusting the position of the metal fittings. Therefore, it is possible to effectively prevent the vibration transmitted from the roughing through the elastic buffer to the metal fitting side from being transmitted from the metal fitting to the inverted beam through the position adjusting mechanism and the seat plate. Vibration and noise transmission downstairs can be more effectively reduced.

According to the fifth aspect of the present invention, since the elastic cushion for the end is interposed in the gap between the large edge and the vertical body facing the large edge, the size of the gap is reduced. , Even if it fluctuates due to variations in construction work, etc., it is possible to reliably prevent the edge of the heavy duty from coming into direct contact with the vertical frame, and therefore, vibration is directly transmitted from the heavy edge to the vertical frame. Is effectively suppressed, and the transmission of vibration noise to the downstairs can be more effectively reduced.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view showing a first embodiment of a sound insulation floor structure.

FIG. 2 is a sectional view taken along line 2-2 in FIG.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is an enlarged view of a portion surrounded by a virtual line as viewed from arrow 4 in FIG. 2;

FIG. 5 is a sectional view taken along lines 5-5 in FIG. 4;

FIG. 6 is a perspective view of an elastic buffer and a receiving member.

FIG. 7 is a view corresponding to FIG. 4, showing a second embodiment of the sound insulation floor structure;

8 is a sectional view taken along line 8-8 in FIG. 7;

FIG. 9 is a perspective view of an elastic buffer and a metal fitting.

FIG. 10 is a view corresponding to FIG. 4, showing a third embodiment of the sound insulation floor structure;

11 is a sectional view taken along the line 11-11 in FIG. 10;

FIG. 12 is a sectional view taken along the line 12-12 in FIG. 10;

FIG. 13 is a perspective view of an elastic buffer and a receiving member.

FIG. 14 is a diagram corresponding to FIG. 10, showing a fourth embodiment of the sound insulation floor structure;

15 is a sectional view taken along the line 15-15 in FIG. 14 (FIG. 12);
Corresponding figure)

FIG. 16 is a perspective view of an elastic buffer and a receiving member (corresponding to FIG. 13).

FIG. 17 is a view corresponding to FIG. 15, showing a fifth embodiment of the sound insulation floor structure;

18 is an enlarged sectional view taken along line 18-18 in FIG. 17;

FIG. 19 is a view corresponding to FIG. 18 showing a modification of the seat plate;

FIG. 20 is a cross-sectional view of an essential part showing an example of a fixing means of the receiving bracket with bolts.

FIG. 21 is a sectional view of a floor structure of a conventional building.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 large pulling 2 joist 5 metal fittings 5A substrate 5C guide piece 6 nail as temporary fixing tool 7 elastic buffer 7C concave portion 13 gap 15, 15 'seat plate Aj, Aj' position adjusting mechanism E elastic buffer for end Ff floor Frame Fh Horizontal frame Fv Vertical frame Pb Seat Pr Elastic buffer Rb Reverse beam S Floor slab

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Okita 14-16 Takashiro Shinmachi, Oita City, Oita Prefecture Takashiro Renesu Building 2F Inside the Renesas Institute, Inc.

Claims (5)

[Claims] 1. A horizontal frame part (F) for partitioning a building into each level.
h) and a vertical frame portion (Fv) extending vertically from the horizontal frame portion (Fh) and connecting the upper and lower horizontal frame portions (Fh). The horizontal frame portion (Fh) includes:
An inverted beam (Rb) extending upward is integrally formed and protruded integrally. On this inverted beam (Rb), a floor frame (Ff) composed of a large pull (1) and a joist (2) is erected, and this floor frame (Ff) is erected. ), A floor plate (3) is laid on the floor plate (3), and a space above the floor (SU) and a space below the floor plate (3) are formed in the building. An elastic buffer (7) having a concave cross section is fitted into a metal fitting (5) on the inverted beam (Rb) having a pair of guide pieces (5C) standing upright. Both sides of the body (7) are in contact with the pair of guide pieces (5C), and the concave portion (7C) of the elastic buffer body (7) whose upper surface is open is provided with the large pull (1) from above. ) Is directly fitted at the lower end,
An elastic buffer (7) is interposed between the lower surface and the reverse beam (Rb) and between the side surface of the large pull (1) and the guide piece (5C). A sound-insulating floor structure in a building, wherein a gap (13) is formed between the vertical frame portion (Fv) and the vertical frame portion (Fv). 2. The receiving member (5) is provided with the reverse beam (Rb).
A seat plate (Pb) in which an elastic buffer plate (Pr) mounted on the bottom surface is joined to the bottom surface, and the pair of guide pieces (5C) are integrally erected on the seat plate (Pb). The sound insulation floor structure in the building according to claim 1, wherein: 3. The receiving member (5) is provided with the inverted beam (Rb).
2. The sound insulation floor structure for a building according to claim 1, wherein the sound insulation floor structure is supported so as to be able to move up and down. 4. The receiving member (5) and the inverted beam (Rb)
The metal fitting (5) is adjusted on the seat plate (15, 15 ') between the elastic cushion plate (Pr) mounted thereon and the seat plate (15, 15') joined to the bottom surface. The sound insulation floor structure of a building according to claim 1 or 3, further comprising a position adjusting mechanism (Aj, Aj ') for supporting the structure. 5. The gap (13) between the edge of the bar (1) and the opposing vertical body part (Fv).
The sound-insulating floor structure for a building according to any one of claims 1 to 4, wherein an elastic cushioning member (E) for an end portion is interposed in the building.