JPH0893115A - Ceiling structure - Google Patents

Abstract

PURPOSE: To obtain a ceiling structure in which the sound within the building can be sufficiently absorbed and corrosive gas is prevented from entering the ceiling space. CONSTITUTION: A ceiling structure supported by hanging bolts 2 suspended from the ceiling slab 1, is constituted of the upper ceiling 5 in which a heat- insulating material 4 is laid in the space between the ceiling frame members 3 assembled as a lattice, and the lower ceiling 9 in which porous sound- absorbing material 8 is provided in the space between the lower ceiling frame members 7 assembled as a lattice suspended from the first ceiling frame member 3 through a suspended bolt 6. And an air layer 10 is interposed between the upper ceiling 5 and the lower ceiling 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling structure, and more particularly to a sound absorbing ceiling structure.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional ceiling structure as described above.
There are the following. This ceiling structure is used for public halls, halls,
It is applied to buildings with relatively high ceilings such as gymnasiums, pools, and meeting venues.

In this ceiling structure, an insert 40 attached to the ceiling slab 31 is used to suspend the suspension bolt 3 from the ceiling slab 31.
2 is suspended, and the hanger 35 is held by the two nuts 33 and 34 at the tip of the suspension bolt 32.
Attaching the four-sided frame main grid 36 to the tip of 5,
As shown in FIG. 7, the ceiling frame is provided in a grid shape by the main bar 37 and the cross bar 38, and the square plate-shaped heat insulating material 39 made of glass wool is arranged in each frame of the grid.

[0004]

By the way, according to the above-mentioned conventional ceiling structure, while having a certain heat insulating effect,
Although it has a sound absorbing effect due to glass wool, it could not sufficiently absorb the reverberant sound of pools, gymnasiums, etc.

As shown in FIG. 5, the air-conditioning duct 45, lighting equipment, and other related equipment are arranged between the ceiling and the ceiling slab, but they are generated from the disinfectant in the pool. Corrosive gas such as chlorine gas enters the ceiling,
There is a problem that the above-mentioned related equipment is corroded and the life of the related equipment becomes short.

[0006] Therefore, an object of the present invention is to provide a ceiling structure capable of sufficiently absorbing the sound in the building and preventing corrosive gas from entering the ceiling.

[0007]

In the present invention, the first means for solving the above problems is, as shown in FIG. 1, suspended by a suspension bolt 2 suspended from a ceiling slab 1, An upper ceiling 5 in which a heat insulating material 4 is laid between the ceiling frame members 3 assembled in a lattice shape, and a lower ceiling which is suspended from the frame material 3 of the first ceiling via suspension bolts 6 and assembled in a lattice shape. The lower ceiling 9 provided with the porous sound absorbing material 8 between the frame members 7, and the air layer 1 between the upper ceiling 5 and the lower ceiling 9.
It is a ceiling structure with 0 interposed.

The second means of the present invention is a ceiling structure in which the lower ceiling 9 constitutes a curved surface with respect to the upper ceiling 5.

[0009]

According to the present invention, the porous sound absorbing material 8 is arranged on the lower ceiling, and the air layer is provided between the lower ceiling and the upper ceiling. Therefore, the sound waves in the room propagate into the pores of the porous sound absorbing plate, and part of the sound energy is consumed as heat energy due to friction with the peripheral wall, viscous resistance, and vibration of the material. And, this sound absorption characteristic is particularly good in the high frequency range.

Further, the air layer acts as a resonator, the air vibrates violently near the resonance frequency, and the sound energy is absorbed as frictional heat at that time. This sound absorption characteristic is good at medium and low temperatures, but can be adjusted by changing the thickness of the air layer, and it is generally advantageous to make the air layer large. Therefore, the upper and lower ceilings and the air layer satisfactorily absorb sound in the low, middle, and high sounds, and effectively absorb the sound in the building.

Further, the angle of the lower sound absorbing plate can be changed by changing the length of the hanging bolt on the lower ceiling, which enhances the sound absorbing effect in the room and realizes ceilings of various shapes. it can.

[0012]

Embodiments of the ceiling structure according to the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a ceiling structure according to the present invention.

In this embodiment, as shown in FIG. 1, the ceiling structure is provided between four-sided frame main grids 3 which are ceiling frame members suspended in a hanging bolt 2 suspended from a ceiling slab 1 and assembled in a grid pattern. A porous material is provided between the upper ceiling 5 having the heat insulating material 4 laid on it and the T-bar 7 as a lower ceiling frame member which is suspended from the frame member 3 of the first ceiling via suspension bolts 6 and assembled in a grid pattern. A lower ceiling 9 provided with a sound absorbing material 8 is provided, and an air layer 10 is interposed between the upper ceiling 5 and the lower ceiling 9.

In the upper ceiling 5, a hanger 12 is attached to the tip of a suspension bolt 2 suspended from an insert 11 embedded in the ceiling slab 1 with two nuts 13 and 14, and a four-way frame main grid 3 is provided on the hanger 12. A ceiling frame is formed by the main bar and the cross bar, and the heat insulating material 4 made of glass wool is arranged with a sealant 16 interposed therebetween.

In the lower ceiling 9, the hanging bolt 6 is attached to the hole formed in the four-sided frame main grid 3 of the upper ceiling with two nuts 16 and 17, and two hangers 20 are provided below the hanging bolt 6. The hanger 20 is attached with bolts 18 and 19, and a T bar 7 having a T-shaped cross section is attached to the hanger 20. A crossbar 22 is attached to the T-bar 21 in the orthogonal direction to form a lattice, and an aluminum sintered plate 8 is attached as a porous sound absorbing material.

Therefore, according to this embodiment, the sound in the building is well absorbed by the upper and lower ceilings and the air layer in the low, middle and high sounds. Also, by changing the length of the hanging bolts on the lower ceiling, the angle of the lower sound absorbing plate can be changed, which enhances the sound absorbing effect in the room and realizes ceilings of various shapes.

Further, since glass wool is used as the heat insulating material, the heat insulating effect is good, and the sound absorbing effect is further improved by absorbing the sound in this glass wool. An aluminum sintered plate is used as the porous sound absorbing material, and since the appearance of the surface of the aluminum sintered plate is good, it is not necessary to perform a finishing process on the interior side of the ceiling.

Further, since the lower ceiling and the upper ceiling are double ceilings, corrosion due to corrosive gas related to equipment can be prevented, internal dew condensation can be prevented, and life of equipment can be extended.

Moreover, since the ceiling structure is doubled, the heat insulating effect is improved, and the heating and cooling costs can be reduced.

FIG. 2 shows a second embodiment of the ceiling structure according to the present invention. In this embodiment, an aluminum sintered plate is bonded to the T bar from below the T bar with an epoxy adhesive and fixed with rivets 25. The present embodiment is the same as the structure according to the first embodiment except for the method of attaching the aluminum sintered plate described above, and thus the same members are designated by the same reference numerals and detailed description thereof is omitted. ..

According to this embodiment, in addition to the same effects as the first embodiment, the ceiling frame material is covered with the aluminum sintered plate, and the ceiling frame material cannot be seen from the room, resulting in a good appearance. Become.

[0022]

[Effect] As described above, according to the present invention, the upper and lower ceilings and the air layers effectively absorb sound in the low, middle, and high sounds, and effectively absorb the sound in the building. Also, by changing the length of the hanging bolts on the lower ceiling, the angle of the lower sound absorbing plate can be changed, which enhances the sound absorbing effect in the room and realizes ceilings of various shapes.

Furthermore, since it has a double ceiling consisting of a lower ceiling and an upper ceiling, it prevents corrosion due to corrosive gases related to equipment,
In addition, it is possible to prevent internal dew condensation, have a long lifespan related to the equipment, and have a good heat insulating effect, so that it is possible to reduce heating and cooling costs.

[Brief description of drawings]

FIG. 1 is a sectional view of a ceiling showing a first embodiment of a ceiling structure according to the present invention.

FIG. 2 is a sectional view of a ceiling showing a second embodiment of the ceiling structure according to the present invention.

FIG. 3 is a sectional view of a ceiling showing a conventional ceiling structure.

FIG. 4 is a plan view of the ceiling showing the ceiling structure shown in FIG.

FIG. 5 is a sectional view of the ceiling showing the arrangement of ducts in the conventional ceiling structure.

[Explanation of symbols]

 1 Ceiling Slab 2 Hanging Bolt 3 Ceiling Frame Material 4 Insulation Material 5 Upper Ceiling 6 Hanging Bolt 7 Lower Ceiling Frame Material 8 Porous Sound Absorbing Material 9 Lower Ceiling

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area E04H 3/14 A

Claims (2)

[Claims] 1. An upper ceiling (5) in which a heat insulating material (4) is laid between ceiling frame members (3) suspended in a hanging bolt (2) suspended from a ceiling slab (1) and assembled in a grid pattern. ) And a lower ceiling frame member (7) which is suspended from the first ceiling frame member (3) through height-adjustable hanging bolts (6) and is assembled in a lattice pattern. A ceiling structure comprising a lower ceiling (9) provided with a perforated sound absorbing material (8), wherein an air layer (10) is interposed between the upper ceiling (5) and the lower ceiling (9). 2. The ceiling structure according to claim 1, characterized in that the lower ceiling (9) constitutes a curved surface with respect to the upper ceiling (5).