JPH1113198A - Sound-insulating fire-resisting ceiling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve fire resistance and soundproofness by inserting a thermally foamed sealing material and an elastic body having a specific spring constant in an opening between a ceiling material, in which a rear end section is fixed onto a ceiling joist, and a wall material. SOLUTION: A floor material 10 on a floor is installed to a beam 13 through a floor joist 12 while a ceiling joist 3 and a ceiling material 2 are mounted on a strap 15 hung down from the carrying rod 11 of a ceiling, in which an end section is fixed onto the beam 13, and an exterior wall material 14 and a wall material 1 are set up on the outside and indoor side of the beam 13 respectively. A thermally foamed sealing material 8 and an elastic body 4, in which a spring constant is set in 1.0×10<6> (N/m) or less and which is formed in a hollow shape, etc., is inserted into an opening section 7 between the ceiling material 2, in which a rear end section is fixed onto the ceiling joist 3, and the wall 1. The sealing material 8 and the elastic body 4 are stuck beforehand to the ceiling joist 3 as required and workability is improved. Accordingly, a solid borne sound transmitted from an upper floor to an underfloor section can be interrupted by the elastic body, and the transmission of a heavy impulsive sound from the upper floor can be prevented, and the spreading of a fire can be inhibited because the sealing material is thermally foamed and the opening is closed at the time of the fire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound-insulating fireproof ceiling structure, and more particularly, to a fire-resistant sealing material elastic body provided between a ceiling component comprising a ceiling material and a ridge and a wall material, and mainly to a fireproof fireproof structure. The present invention relates to a sound-insulating fireproof ceiling structure that attempts to improve soundproofing performance while having performance.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a ceiling member such as a ridge 3 and a ceiling member 2 and a wall member 1 are fixed by fixing the ridge 3 to the wall member 1 with a nail 16. The ceiling material 2 is fixed to the ridge 3 with screws or the like, and the ceiling component and the wall material 1 are connected.

[0003] Further, in a housing having upper and lower floors, the impact noise caused by splashing, walking, falling objects, etc. on the upper floor is caused by vibrations of the floor material transmitted through the ceiling components and wall materials, and the sound is transmitted to the lower floor. Propagate. For this reason, in order to improve the soundproofing performance related to the floor impact sound, measures such as increasing the rigidity of the entire floor by increasing the joist height or the like are taken.

[0004]

However, in the above conventional example, since the ceiling component and the wall member are fixed and connected with screws, the impact sound is propagated by solid propagation, and the soundproofing performance is not sufficient. No significant improvement is seen. In addition, there is a problem in that the ceiling height is reduced by increasing the joist height, the weight of the entire floor is increased, and the workability is deteriorated. Further, when a fire occurs, the flame or hot air easily passes through the gap between the floor material and the ceiling material on the floor, the fire easily spreads, and the fire resistance is not sufficient.

The present invention has been made in view of the above circumstances, and provides a soundproof fireproof ceiling structure which does not reduce the ceiling height, has good workability, has fireproof performance, and has high soundproof performance. It is assumed that.

[0006]

According to the first aspect of the present invention, a gap 7 is provided between a ceiling material 2 having a back end fixed to a ridge 3 and a wall material 1. The gap 7
A sound-insulating fire-resistant ceiling structure characterized in that a heat-foamable sealing material 8 and an elastic body 4 are fitted in the ceiling.

In such a soundproof fireproof ceiling structure, the propagation of solids transmitted from the upper floor is interrupted by the elastic body 4 so that it is difficult to transmit to the lower floor. Also, in the event of a fire, the heat-foamable sealing material 8 is foamed by being heated, thereby closing the floor material on the floor, the gap between the wall material 1 and the ceiling material 2, and causing flames and hot air to flow on the floor. It is difficult to enter the space between the floor material and the ceiling material 2 and the fire is difficult to spread.

According to a second aspect of the present invention, in the first aspect of the present invention, the heat-foamable sealing material 8 and the elastic body 4 are arranged between the edge 3 and the wall material 1. It is a soundproof fireproof ceiling structure.

In such a sound-insulating fireproof ceiling structure, since the heat-foamable sealing material 8 and the elastic body 4 are located on the back side of the gap 7, the heat-foamable sealing material 8 and the elastic body 4 are difficult to see from below. Has become.

According to a third aspect of the present invention, there is provided the soundproof fireproof ceiling according to the second aspect, wherein the thermal foamable sealing material 8 and the elastic body 4 are used in advance with the ridge 3 attached thereto. Structure.

In such a sound-insulating fire-resistant ceiling structure, it is not necessary to insert and insert the heat-foamable sealing material 8 and the elastic body 4 into the gap 7 later, so that the workability is improved.

The invention described in claim 4 is the first to third aspects of the present invention.
5. The sound-insulating fire-resistant ceiling structure according to any one of the above, wherein the elastic body 4 has a spring constant of 1.0 × 10 ⁶ (N / m) or less.

In such a soundproof fireproof ceiling structure, the elastic constant of the elastic body 4 is sufficiently low, and it is easy to block solid propagation.

[0014] The invention according to claim 5 provides the invention according to claims 1 to 4.
5. The soundproof fireproof ceiling structure according to any one of the above items, wherein the elastic body 4 is formed in a hollow shape.

In such a soundproof fireproof ceiling structure, since the elastic body 4 is easily deformed according to the size or shape of the gap 7, it is possible to reliably and easily cover the gap 7 with the elastic body 4. It has become.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 and FIG. 2 are schematic sectional views showing one soundproof fireproof ceiling structure of the above embodiment.
FIG. 3 is a schematic cross-sectional view showing a thermally foamable sealing material 8, an elastic body 4, and a ridge 3 forming another example of the soundproof fireproof ceiling structure of the above. FIG. 4 is a graph showing the level of improvement of the heavy floor impact sound of the soundproof fireproof ceiling structure shown in FIG. 1 in comparison with a comparative example in which the ridge 3 is fixed to the wall material 1 with screws.

In FIG. 1 or FIG. 2, reference numeral 10 denotes a floor material constituting a floor on the floor, which is provided on a beam 13 via a joist 12. Reference numeral 11 denotes a hanging tree receiver, which is mounted on a beam 13 with its end placed thereon. A hanging tree 15 is attached to the hanging tree receiver 11 so as to hang down. Further, the ridge 3 and the ceiling material 2 are attached to the hanging tree 15. Also, an outer wall material 14 is provided on the outdoor side of the beam 13,
The wall material 1 is provided on the indoor side of the beam 13 with its upper end abutting.

In the soundproof fireproof ceiling structure formed as described above, a gap 7 is provided between the ceiling material 2 having the rear end fixed to the ridge 3 and the wall material 1. Part 7
A heat-foamable sealing material 8 and an elastic body 4 are fitted into the sealing member.

That is, in the structure shown in FIG. 1, the heat-foamable sealing material 8 and the elastic body 4 are inserted into the gap 7 between the end of the ceiling material 2 and the wall material 1.

In the embodiment shown in FIG. 2, a heat-foamable sealing material 8 and an elastic body 4 are fitted in a gap 7 between a ridge 3 fixing the rear surface end of the ceiling material 2 and the wall material 1. Has been inserted.

In the soundproof fireproof ceiling structure constructed as described above, the propagation of solids transmitted from the upper floor is interrupted by the elastic body 4, so that the heavy floor impact sound from the upper floor is less likely to be transmitted to the lower floor. It has a high sound insulation fireproof ceiling structure. In the event of a fire, the heat-foamable sealing material 8
Is foamed by heating, and floor material and wall material 1 on the floor
The space between the ceiling material 2 and the ceiling material 2 is closed, so that it is difficult for flames or hot air to enter the space between the floor material and the ceiling material 2 on the floor, making it difficult for fire to spread. Therefore, it also has fire resistance.

In FIG. 2, since the elastic body 4 is located on the back side of the gap 7, the elastic body 4 is hardly seen from below.
The soundproofing performance is improved and a ceiling with a good appearance is formed.

Hereinafter, constituent materials and the like will be described more specifically with reference to the drawings. In FIG. 1 or 2, the hanging tree receiver 11 is 45 × 105 mm, and the hanging tree 15 is
30 × 35 mm, 105 × 290 mm for the beam 13,
As the field edge 3, a 30 × 35 mm toga was used. In addition, as these members, other commonly used building materials such as woody materials such as pine, cedar, cypress, and glued laminated wood, and resin moldings can be used. The flooring material 10 is a 12 mm thick floor finishing material, and the ceiling material 2 is a 1 mm thick flooring material.
A 2.5 mm gypsum board was used as the wall material 1 with a thickness of 15 mm.
mm gypsum board was used.

As the elastic body 4, foamable neoprene rubber of 20 × 20 mm was used. The elastic constant of the elastic body 4 is 5.0 × 10 ⁵ (N / m). Examples of the elastic body 4 include styrene-butadiene rubber, polyisoprene rubber, polybutadiene rubber, nitrile rubber, butyl rubber, silicone rubber, and the like, in addition to the above-described foamable neoprene rubber.
Synthetic rubber such as urethane rubber or natural rubber can be used. Further, glass wool, rock wool, urethane, or the like may be used.

The elastic constant of the elastic body 4 is as follows.
It is preferably 0 × 10 ⁶ (N / m) or less. If the elastic body 4 has such a spring constant, it is easy to block solid propagation, and the propagation of impact sound is reliably prevented.

The heat-foamable fire-resistant sealing material 8 includes:
A graphite-based heat-foamable refractory sheet was used. Such a heat-foamable refractory sealing material 8 has a foaming agent and a phosphoric acid-containing catalyst. The raw material starts to be dehydrated and carbonized by the action of the phosphoric acid-containing catalyst and the heat of the fire source, and at the same time, the foaming agent Any material may be used as long as it is thermally decomposed to generate a nonflammable gas and start foaming to form a nonflammable carbonized layer.

As shown in FIG. 2, when the heat-expandable fire-resistant sealing material 8 and the elastic body 4 are inserted between the edge 3 and the wall member 1, the nail 16 and the edge 3 The body 4 and the wall member 1 may be fixed.

Alternatively, as shown in FIG. 3, the ceiling is formed by using the edge 3 to which the thermally foamable refractory sealing material 8 and the elastic body 4 are pasted with an adhesive or the like, so that the thermally foamable fireproof sealant 8 and the elastic body 4 are formed. The workability of fitting and inserting the fireproof seal material 8 and the elastic body 4 into the gap portion 7 later can be omitted, and the workability can be improved.

In this case, the elastic body 4 is adhered to the edge 3 and the heat-expandable refractory seal material 8 is adhered to the elastic body 4. The position with 4 may be exchanged. That is, the heat-foamable fire-resistant sealing material 8
May be arranged between the edge 3 and the elastic body 4.

Further, as shown in FIG. 3, a configuration in which a hollow portion 6 is provided inside and the elastic body 4 is formed to be hollow is also one of the preferable embodiments. Such an elastic body 4
According to this, since the elastic body 4 is easily deformed in accordance with the size or shape of the gap 7, the gap 7 can be reliably and easily covered by the elastic body 4, and the soundproof performance is further improved. doing.

The above-mentioned hollow portion 6 may be formed in various cross-sectional shapes, or may be formed by dividing into a large number of pieces.

Further, as shown in FIG. 4, the heavy floor impact sound level of the soundproof fireproof ceiling structure shown in FIG. 1 is shown as an improvement over the comparative example.

As a comparative example, the structure shown in FIG. 5 of the conventional example is used. The gap 3 is not provided, and the edge 3 is brought into direct contact with the wall material 1 and fixed with the nail 16. The end surface of the ceiling material 2 is also in contact with the wall material 1 at the same time. Floor material 1
Exactly the same thing is used as 0, a beam 13, a hanging tree receiver 11, and the like.

As can be seen from FIG. 4, the soundproof fireproof ceiling structure shown in FIG.
It can be seen that the weight floor impact sound level of 3,125 Hz) was improved by 6.9 dB at 63 Hz and 3.3 dB at 125 Hz, and the soundproofing performance was sufficiently improved. In addition, by using a graphite-based heat-foamable fire-resistant sheet as the heat-foamable fire-resistant seal material 8, fire resistance of quasi-fire resistance of 45 minutes is obtained.

[0036]

According to the first aspect of the present invention, a heat-foamable fire-resistant sealing material and an elastic body are fitted between a ceiling material having a back surface fixed to a field edge and a wall material, and the two are directly connected to each other. , Solid propagation is reduced, and the elastic body blocks the gap between the ceiling material and the wall material, so that high soundproofing properties are obtained. In addition, in the event of a fire, the heat-foamable sealing material foams and can close the gap between the floor material or the wall material and the ceiling material on the floor, so that flames or hot air may flow into the floor material on the floor. It becomes difficult to enter the space between the ceiling material and the fire, making it difficult to spread the fire, and improving the fire resistance performance.

According to the second aspect of the present invention, since the heat-foamable refractory seal material and the elastic body are located on the deep side of the gap, the heat-foamable refractory seal material and the elastic body are hardly seen from below, and A good ceiling is formed.

According to the third aspect of the present invention, since the field edge and the elastic body are integrated, there is no need to insert and construct the elastic body into the gap later, and the workability is very good. .

According to the fourth aspect of the present invention, the elastic constant of the elastic body is sufficiently low, and the energy acting as the vibration source is reduced, so that the propagation of the solid is easily interrupted. Therefore, high soundproofing characteristics are obtained.

According to the fifth aspect of the present invention, the elastic body is easily deformed in accordance with the size or shape of the gap, and the gap can be reliably and easily closed by the elastic body, so that high soundproofing performance is obtained. be able to.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of a soundproof fireproof ceiling structure according to an embodiment of the present invention.

FIG. 2 is a schematic sectional view showing another example of the soundproof fireproof ceiling structure of the above.

FIG. 3 is a schematic cross-sectional view showing a thermally foamable fire-resistant sealing material, an elastic body, and a field edge which constitute another example of the soundproof fire-resistant ceiling structure of the above.

FIG. 4 is a graph showing the weight floor impact sound improvement level of the soundproof fireproof ceiling structure shown in FIG. 1 with respect to a comparative example in which a field edge is fixed with screws to a wall material.

FIG. 5 is a schematic sectional view showing a conventional ceiling structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wall material 2 Ceiling material 3 Field edge 4 Elastic body 6 Hollow part 7 Gap part 8 Thermal foaming fireproof sealing material 10 Floor material 11 Suspended tree receiver 12 Joist 13 Beam 14 Exterior wall material 15 Suspended tree 16 Nail

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI E04B 5/52 U 5/60 A

Claims (5)

[Claims] 1. A ceiling material (2) having a back end fixed to a ridge (3).
And a wall material 1, wherein a gap 7 is provided, and a thermally foamable sealing material 8 and an elastic body 4 are inserted into the gap 7 to provide a soundproof fireproof ceiling structure. 2. The heat-foamable sealing material 8 and the elastic body 4.
2. The soundproof fireproof ceiling structure according to claim 1, wherein the fireproof ceiling structure is provided between the edge 3 and the wall material 1. 3. The heat-foamable sealing material 8 and the elastic body 4.
The soundproof fireproof ceiling structure according to claim 2, characterized in that the frame is formed by using a field edge 3 that is attached in advance. 4. The elastic body 4 has a spring constant of 1.0 × 10 ^6.
(N / m) or less, The soundproof fireproof ceiling structure according to any one of claims 1 to 3. 5. The soundproof fireproof ceiling structure according to claim 1, wherein the elastic body 4 is formed in a hollow shape.