JP3028775B2 - Construction structure of sound insulation wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction structure of a sound insulating wall having a double wall structure for forming a wall surface of an acoustic room such as a listening room or a home theater.
In particular, by devising the construction structure of assembling the inner and outer double-sided boards to the frame, it is possible to simplify the workability and reduce the weight of the work, and at the same time, to reduce the sound insulation performance and design quality due to the generation of gaps and solid-borne sound. This is to prevent it.

[0002]

2. Description of the Related Art Conventionally, in such a sound insulating wall, FIG.
As shown in FIG. 0, there is a type having a double-walled structure in which inner and outer double-sided plates b and c are attached to a channel frame a having a U-shaped cross section via a spacer member d made of an elastic body.

When such a sound insulating wall is to be assembled with the inner and outer double-sided boards b and c on the frame a, as shown in FIG. 11, a spacer member d is interposed between the inner and outer double-sided boards b and c. The compression jig e is elastically compressed, the compressed inner and outer side plates b and c are stored in the frame a, and then the compression jig e is removed and opened, whereby the spacer member d expands due to elastic return. By operation, the inner and outer double-sided boards b and c are assembled and fixed to the frame a in close contact.

[0004]

However, in the above-described sound insulating wall having the conventional structure, since the inner and outer double-sided boards b and c are in contact with the frame a, for example, solid-borne sound is not incident on the outer side wall. When the solid propagates from b to the transmission side plate c of the inner wall, the transmission loss of the solid propagation sound is small, and such a tendency is remarkably exhibited particularly in a coincidence frequency region of about 2500 to 5000 Hz, and the sound insulation performance is reduced.

In addition, at the time of construction, the inner and outer double-sided plates b and c are subjected to a drilling process for penetrating the compression jig e, or the inner and outer double-sided plates b and c are stored in the frame a. Since it is necessary to remove and collect, the sound insulation performance and the workability are inevitably reduced, which not only increases the cost but also increases the frame a
The holes for the penetration of the compression jig e formed in the inner and outer side walls and the inner and outer side plates b and c are exposed, thereby deteriorating the design.

[0006] Further, since the frame a cannot be pre-assembled into four sides in a rectangular shape, not only the strength of the skeleton at the time of construction is reduced, but also when it is used for high sound insulation, when it is in a compressed state, the whole Heavy weight makes construction work difficult.

Conventionally, as shown in FIGS. 12 and 13, a frame a having an L-shaped cross section with one side wall opened and a plate member a2 which is retrofitted to the frame a1 are provided. To separate and form into a channel shape,
After assembling the inner and outer double-sided plates b and c to the frame body a1 via the spacer member d, the plate member a2 is fixed to the frame body a1 by tapping screws f while compressing the spacer member d.
There is a construction having a construction structure that is fixed and assembled.

In the construction of such a sound insulating wall, it is not necessary to make a hole in the compression jig e and the inner and outer side plates b and c as described above.
It can be installed side by side, the strength of the skeleton is increased, and the weight of each assembly member alone is light, so that the construction work is easy, but the frame a and the inner and outer double-sided boards b, c
When sound propagates through the solid from the incident side plate b on the outer wall to the transmitting side plate c on the inner wall, for example, there is little transmission loss of the solid-borne sound, so the sound insulation performance is reduced. In addition to this, there is a problem that the plate members forming the inner and outer side walls of the frame a are exposed on both the inner and outer sides, thereby deteriorating the design.

It is an object of the present invention to improve the workability and weight of the work by improving the assembly of the inner and outer double-sided plates to the frame, and to produce gaps, design and solid sound. An object of the present invention is to provide a construction structure of a sound insulation wall capable of preventing a decrease in sound insulation performance.

[0010]

In order to solve the above-mentioned problems, the present invention provides a double wall structure in which inner and outer side plates are assembled to a channel-shaped frame via a spacer member made of an elastic material. In the sound insulating wall having, the frame frame has a L-shaped cross-section with one side wall surface opened,
Separately formed into a channel shape with an angle member that is later attached to the frame body, and the one face plate is assembled to the frame body via the spacer member, and the frame member is in a non-contact state with the angle member. Then, the other face plate is assembled to the angle member from the outside.

In this case, as the spacer member, 7 ×
It is made of an elastic material having a static compression modulus in the range of 10 ^{4 to} 1.5 × 10 ⁶ N / m ² .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings shown in FIGS. 1 to 9. As shown in FIG. 1, reference numeral 100 in the figure denotes a sound insulating wall according to the present invention. .

The sound insulating wall 100 has a double wall structure in which inner and outer double-sided plates 2 and 3 are assembled to a channel-shaped frame 1 via a spacer member 4 made of an elastic material. L-shaped frame 12 having one side wall formed by plate member 11 and the other side wall being open
And an angle member 13 to be retrofitted to the frame body 12 to form a channel. The spacer member 4 includes a plurality of divided bodies 4.
1, 42, and 43.

The sound insulation wall 100 is to be assembled in the order of construction as shown in FIGS. 2 to 6. First, one side wall surface is formed by a frame member 12 formed of a plate member 11. Are previously assembled in a rectangular shape on four sides (see FIG. 2).

Next, the first and second divided bodies 41 and 42 of the spacer member 4 are arranged in the frame 12 in an L-shape by abutting the plate member 11.
After one face plate (outer wall) 3 is assembled to
And FIG. 4), while fixing the angle member 13 on the frame body 12 with screws 14 (see FIG. 5), and a face plate (outer wall).
By interposing the third divided body 43 of the spacer member 4 between the angle member 3 and the angle member 13 in a press-fit state, the face plate (outer wall) 3 is elastically held in a non-contact state with the frame body 12 (FIG. 6). reference).

In this state, the other face plate (inner wall) 2 is assembled and fixed to the angle member 13 from the outside with a fixing tool 5 such as a pressure-sensitive fastener (for example, "magic tape (trade name)"). The sound insulation wall 100 is constructed in an assembled state as shown in FIG.

Incidentally, as the spacer member 4,
For example, it is made of an elastic material such as a sponge and has a static compression elastic modulus of 7 × 10 ^{4 to} 1.5 × 10 ⁶ N / as shown in FIG.
Those having a range of m ² are preferably used.

FIG. 8 shows the measurement results of the transmission loss of the solid-borne sound through the sound insulating wall. A 5-mm thick cement plate was used as the inner and outer double-sided plates 2 and 3 and the distance between them was 56 mm.
Example A of the present invention is compared with a conventional product B shown in FIG. 10, and in particular, about 2500 to 5000
In the present invention, in the coincidence frequency region of Hz, the sound insulation performance is enhanced as is clear from the fact that the transmission loss of the solid-borne sound is greater than that of the conventional product B.

FIG. 9 shows the results of measuring the transmission loss of solid-borne sound due to the static compressive elasticity of the spacer member 4 in the sound insulating wall according to the present invention. Used and their spacing is 29
mm, the static compression modulus of the spacer member 4 is 2.6 *.
Comparison of the transmission loss of the sound propagating sound through the sound insulation wall at E5N / m ² (Example A), 1.2 * E4N / m ² (Example B), and 1.3 * E10N / m ² (Example C). It becomes.

In the above-described embodiment, a pressure-sensitive fastener is used as the fixing tool 5 for fixing the face plate 2 to the angle member 13, but other forms of the fixing tool 5 include, for example, bolts or screws. May be fixed.

That is, according to the present invention, by adopting the above-described structure, the frame 1 has an L-shaped cross section with one side wall open, and an angle member to be retrofitted to the frame 12. 13 and is formed in a channel shape, and at the time of construction, after assembling and holding one face plate 3 on the frame body 12, the other face plate 2 is assembled to the angle member 13 from the outside. It becomes possible to put it on the four sides in a rectangular shape,
The weight of each assembly member alone is also light, which facilitates construction work.

In addition, since one face plate 3 forming the outer wall of the frame 1 is held in a non-contact state via the spacer member 4 made of an elastic body, a gap is provided between the frame 1 and the face plate 3. Not only does not occur, but also the transmission loss of the solid-borne sound increases, preventing the sound insulation performance from lowering.

Further, since the frame 1 is not exposed to the other face plate 2 forming the inner wall, the conventional design is prevented from deteriorating.

Further, the spacer member 4 has a size of 7 × 10 ^{4 or} less.
Since it is made of an elastic body having a static compressive modulus in the range of 1.5 × 10 ⁶ N / m ² , the transmission loss of solid-borne sound between the inner and outer double-sided plates 2 and 3 is large, and the sound insulation performance can be improved.

[0025]

As is apparent from the above description, according to the present invention, the channel is formed by a frame having an L-shaped cross section with one of its side walls being open, and an angle member to be retrofitted to the frame. Separately formed into a shape, and at the time of construction, after assembling and holding one face plate on the frame body, the other face plate is assembled from the outside to the angle member, so the frame frame is pre-assembled on four sides in a rectangular shape In addition, since the weight of each assembly member alone is reduced, the construction work can be easily performed.

In addition, since one of the face plates forming the outer wall of the frame is held in a non-contact state through the spacer member made of an elastic material, no gap is formed between the frame and the face plate. In addition, since the transmission loss of the solid-borne sound increases, it is possible to prevent the sound insulation performance from lowering.

Further, since the frame is not exposed on the other face plate forming the inner wall, it is possible to prevent the conventional design from being deteriorated.

Further, the spacer member is 7 × 10 ⁴ -1.
Since it is made of an elastic body having a static compression modulus in the range of 5 × 10 ⁶ N / m ² , the transmission loss of solid-borne sound between the inner and outer double-sided plates can be increased, and the sound insulation performance can be improved. it can.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of a construction structure of a sound insulating wall according to the present invention.

FIG. 2 is an explanatory view showing a frame assembly state of a frame in a first step during construction.

FIG. 3 is an explanatory view showing a second step in the same construction state.

FIG. 4 is an explanatory view showing a third step in the same construction state.

FIG. 5 is an explanatory view showing a fourth step in the construction state.

FIG. 6 is an explanatory view showing a fourth step in the same construction state.

FIG. 7 is an explanatory diagram showing an average value of transmission loss in solid propagation with respect to a static compression modulus of the spacer member.

FIG. 8 is an explanatory diagram showing a measurement result of a transmission loss of solid-borne sound in the sound insulating wall.

FIG. 9 is an explanatory diagram showing a measurement result of a transmission loss of solid-borne sound based on a static compression modulus of the spacer member 4 in the sound insulating wall.

FIG. 10 is a sectional view of a main part showing a form of a conventional sound insulating wall.

FIG. 11 is an explanatory view showing a construction form of a conventional sound insulating wall.

FIG. 12 is an essential part cross-sectional view showing another conventional sound insulating wall.

FIG. 13 is an explanatory view showing a construction form of another conventional sound insulating wall.

[Description of Signs] 100 ... sound insulation wall, 1 ... frame, 11 ... plate member, 12 ... frame, 13 ... angle member, 14 ... screw, 2 ... face plate (Inner wall), 3 ... face plate (outer wall), 4, 41, 42, 43 ... spacer member (elastic body), 5 ... fixture.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-42269 (JP, A) JP-A-48-84418 (JP, A) JP-A 8-93340 (JP, A) 46305 (JP, U) Japanese Utility Model 60-60903 (JP, A) Japanese Utility Model Application Hei 6-10589 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 1 / 82-1 / 90

Claims (2)

(57) [Claims] 1. A sound insulating wall having a double-wall structure in which inner and outer side plates are assembled to a channel-shaped frame via a spacer member made of an elastic body, wherein the frame has a cross section in which one side wall is open. An L-shaped frame and an angle member to be retrofitted to the frame are separately formed in a channel shape, and the one face plate is assembled to the frame via the spacer member, and the angle member is not attached to the frame. The sound insulation wall construction structure, wherein the other face plate is assembled to the angle member from the outside after being held in a contact state. 2. The spacer member as 7 × 10 ⁴ -1.
The construction structure for a sound insulating wall according to claim 1, wherein an elastic body having a static compression modulus in a range of 5 x 10 ⁶ N / m ² is used.