JPH07279293A - Interior ceiling structure - Google Patents

Abstract

PURPOSE:To enhance sound insulation characteristics by preventing an interior ceiling material from being vibrated by a compressed air layer. CONSTITUTION:In an interior ceiling structure wherein an interior ceiling material 3 is provided under a ceiling slab 1 comprising a concrete slab or the like through an air layer 2, one, or two or more of communication holes 12 are formed in any one or in two or more of a frame wall 9 surrounding the air layer 2 or interior wall or partition wall, or the interior ceiling material 3, except for the ceiling slab 1. When an impact force acts on the ceiling slab 1, compressed air of the air layer 2 flows through the communication holes 12 to other spaces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interior ceiling structure in which an interior ceiling material is provided below a ceiling slab such as a concrete slab via an air layer.

[0002]

2. Description of the Related Art In a conventional interior ceiling structure, as shown in FIG. 16, an interior ceiling material 3 is provided below a ceiling slab 1 made of concrete slab or the like via an air layer 2. The interior ceiling material 3 includes bolts 4 protruding downward from the ceiling slab 1.
Secure the field support 6 to the hanger 5 fixed to the lower end of the
It is attached to the field receiver 6 by a field 8 attached with a clip 7. A gap between the vehicle body wall 9 and the interior ceiling material 3 is filled with a peripheral edge 10.

[0003]

Since the air layer 2 is hermetically closed, the ceiling slab 1 has an impact force, for example, in an apartment house, the ceiling slab 1 becomes a floor slab on the upper floor, and the impact from the floor on the upper floor is air. The layer 2 is compressed and the vibration of the interior ceiling material 3 is amplified by the spring effect of the compressed air. as a result,
Sound insulation performance deteriorates.

Therefore, an object of the present invention is to provide an interior ceiling structure in which the air layer is prevented from vibrating and vibrating the interior ceiling material.

[0005]

In order to achieve the above object, the present invention provides an interior ceiling structure in which an interior ceiling material is provided below a ceiling slab made of concrete slab or the like through an air layer. One or two or more communicating holes are formed in any of the surrounding body walls, interior walls or partition walls, members other than ceiling slabs such as interior ceiling materials, or two or more communicating holes are formed in the ceiling slab through these communicating holes. It is configured so that the compressed air in the air layer can flow out to another space when an impact force is applied.

[0006]

According to the present invention, even if an impact force is applied to the ceiling slab and the air layer is compressed, this compressed air flows out to another space through the communication hole to prevent vibration of the interior ceiling material and to provide a sound insulation effect. Increase.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

In the first embodiment shown in FIG. 1, the ceiling slab 1
A field edge receiver 6 is fixed to a hanger 5 (not shown) provided at the lower end of a bolt 4 (not shown) projecting downward from. Such a configuration is similar to the conventional example shown in FIG. A field edge 8 is attached to the field edge receiver 6 with a clip 7, and an interior ceiling material 3 is attached to the field edge 8. A flexible fin 11 made of a rubber material or the like is attached to a gap between the interior ceiling material 3 and the precursor wall 9. This fin 11 is attached so that this gap cannot be seen from the room under the ceiling, and the compressed air in the air layer 2 is
The fin 11 bends and the compressed air in the air layer 2 escapes into the room under the ceiling. When the fin 11 bends, a communication hole 12 is formed between the body wall 9 and the fin 11.
You can

In the second embodiment shown in FIG. 2, an interior wall 13 is provided on the side of the precursor wall 9 with a predetermined space, and a rim 10 is provided in the gap between the interior wall 13 and the interior ceiling material 3. Is installed. The compressed air in the air layer 2 flows out between the vehicle body wall 9 and the interior wall 13 through the communication hole 12 formed in the interior wall 13.

FIG. 3 shows a third embodiment, in which a communication hole 12 is formed in the body wall 9.

In the fourth embodiment shown in FIG. 4, a curtain box 14 for mounting a curtain rail is provided between the precursor wall 9 and the interior ceiling material 3, and the curtain box 14 is provided.
It shows an example in which a communication hole 12 is formed. A curtain is attached to the curtain box 14.

In the fifth embodiment shown in FIG. 5, the partition wall 15 partitions the room, and the partition wall 15 is provided with a communication hole 12.
The compressed air in the air layer 2 in one room is let out to the air layer 2 in the other room.

FIG. 6 shows the fin 11 shown in the first embodiment. When compressed air acts, each flexible blade falls in the direction of the arrow.

FIG. 7 shows the peripheral edge 10 and the peripheral edge 10
The cross-hatched portion is made of a breathable porous body 10A. Therefore, this porous body 1
The ventilation passage of 0A constitutes the communication hole 12. In addition, the entire periphery 10 may be a porous body.

The rim 10 shown in FIG. 8 is provided with a fin 10B, and the fin 10B is bent by compressed air like the fins 11 to form a gap between the fin 10B and the body wall 9, and this gap forms a connection with the communication hole 12. It was made to become.

A sixth embodiment shown in FIG. 9 shows an example in which a louver 16 is used instead of the fin 11 in the first embodiment.

In the seventh embodiment shown in FIG. 10, a communication hole 12A is formed on the floor side of the interior wall 13 as shown in the second embodiment, and compressed air in the air layer 2 is passed from the communication hole 12 to the precursor wall 9. Between the interior wall 13 and the interior wall 13, and the air that has flowed out is allowed to escape under and above the floor through the communication hole 12B below. A skirting board 18 is provided between the floor structure 17 and the interior wall 13, and a passage is formed in the skirting board 18 for allowing the air discharged from the communication hole 12B to escape to the floor.

FIG. 11 shows another peripheral edge 10, in which a slit 14 is formed, and the presence of the slit 14 allows the compressed air in the air layer 2 to flow out under the ceiling. The slit 14 becomes the communication hole 12.

FIG. 12 shows a plate member 19 provided between the interior ceiling member 3 and the precursor wall 9, and the communication hole 12 is formed in the plate member 19.

In the embodiment shown in FIG. 13, a plate material 19 having the same thickness as the interior ceiling material 3 is provided between the interior ceiling material 3 and the precursor wall 9, and a communication hole 12 is formed in the plate material 19. .

FIG. 14 is a graph comparing the heavy floor impact sound insulation performances. JIS-A-14 is shown on the upper surface of the ceiling slab 1.
Based on No. 18, the heavy floor impact sound insulation performance measurement was performed. The thickness of the ceiling slab 1 was 150 mm. In the figure, reference numeral I is a case of only a concrete slab provided with nothing under the ceiling slab 1, reference numeral II is a conventional example shown in FIG. 16, and reference numeral III is a first embodiment of the present invention shown in FIG. Is. Further, FIG. 15 is a graph comparing the light-weight floor impact sound insulation performance under the same conditions. As is clear from the graphs shown in FIGS. 14 and 15, the interior ceiling structure of the present invention is excellent in impact sound insulation.

The air layer 2 is formed by being surrounded by the interior ceiling material 3 and other members, and the means for causing the air in the air layer 2 to flow out from the space surrounding the air layer 2 to another space is as described above. It may be a combination of examples. Also, the air outflow means is 1
It is not limited to only one place. Furthermore, the interior wall 13 and the partition wall 15 do not have to be in contact with the ceiling slab 1.

[0023]

As described above, according to the present invention, one or two or more parts of any of the members excluding the ceiling slab such as a vehicle body wall or an interior wall or an interior ceiling material that surrounds an air layer are provided. The above-mentioned communication holes are formed, and when the impact force acts on the ceiling slab through these communication holes, the compressed air in the air layer is made to flow out to another space. The vibration is transmitted to the interior ceiling material to prevent the vibration of the interior ceiling material from being deteriorated, and as a result, the sound insulation performance is also improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment.

FIG. 2 is a sectional view showing a second embodiment.

FIG. 3 is a sectional view showing a third embodiment.

FIG. 4 is a sectional view showing a fourth embodiment.

FIG. 5 is a sectional view showing a fifth embodiment.

FIG. 6 is a front view showing a fin used in the first embodiment.

FIG. 7 is a front view showing an example in which the peripheral edge itself has air permeability.

FIG. 8 is a front view showing another example of a peripheral edge having a ventilation function.

FIG. 9 is a partial cross-sectional perspective view showing a sixth embodiment.

FIG. 10 is a sectional view showing a seventh embodiment.

FIG. 11 is a perspective view showing another example of the peripheral edge.

FIG. 12 is a cross-sectional view showing an example using a plate member having a vent hole.

FIG. 13 is a cross-sectional view showing an embodiment in which a mounting portion of a plate material having a ventilation hole is changed.

FIG. 14 is a graph comparing heavy floor impact sound insulation performance.

FIG. 15 is a graph comparing lightweight floor impact sound insulation performance.

FIG. 16 is a sectional view showing a conventional example.

[Explanation of symbols]

 1 Ceiling slab 2 Air layer 3 Interior ceiling material 9 Body wall 10 Surrounding edge 12 Communication hole

Claims (1)

[Claims] 1. An interior ceiling structure in which an interior ceiling material is provided below a ceiling slab made of concrete slab or the like with an air layer interposed between the interior slab and a vehicle body wall or interior wall or partition wall, interior ceiling material, etc. 1 or 2 or more communication holes are formed in any one or two or more of the members excluding the ceiling slab, and when the impact force acts on the ceiling slab through the communication holes, the compressed air in the air layer is converted into another space. The interior ceiling structure is characterized by being configured so that it can flow out to.