JP2000250562A - Soundproof panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a soundproof panel capable of increasing a soundproof effect, preventing the generation of sounds uncomfortable on hearing sensation by a coincidence effect in a treble region and improving the sound shielding performance in a bass region. SOLUTION: A frame 1 is formed of vertical rails 2, horizontal rails 3 and a middle bone 4 to a framework of a square shape. Thin front surface plates 5A and 5B are affixed to both inner and outer surfaces of the frame l and middle rails 6A and 6B consisting of plural sheets of rectangular strip-shaped reinforcing plates are respectively attached to their rear surfaces. The respective middle rails 6A and 6B are arranged in a liberated and alternately non- confronting state without contact between the vertical rails 2 and between the horizontal rails 3 facing each other of the frame 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof panel used for an indoor wall surface of, for example, a listening room of a building. It is intended to improve the sound insulation performance of the vehicle.

[0002]

2. Description of the Related Art Conventionally, in this type of soundproof panel,
There is one having a configuration as disclosed in Japanese Patent Publication No. 7-119487. As shown in FIG. 5 and FIG. 6, such a soundproof panel is formed by forming a frame a into a rectangular frame by a vertical bar b, a horizontal bar c, and a middle bar d, and a surface plate is provided on both the inner and outer surfaces of the frame a. e and f are attached, and a plurality of middle rails d framed between the cross rails c and c facing each other are alternately arranged on the inner and outer surface plates e and f in a non-facing state. It has a form.

[0003]

However, in the above-described soundproofing panel having the conventional structure, each of the middle bars d framed on the frame a is in contact with the horizontal bars c, c. The vibrations of the surface plates e and f are restrained at the portions of the horizontal rails c and c, and the waves having no place to go due to the restrained vibration bounce back, and are easily resonated by the repulsive vibration. , F, thereby reducing the sound insulation performance.

Meanwhile, in a soundproof panel having a conventional structure, for example, the thickness of the surface plates e and f adhered to both the inner and outer surfaces of the frame a is 9 mm or more and the Young's modulus is 2 × 10 ⁹ N.
/ M ² or more, a phenomenon in which the transmission loss of the surface plates e and f sharply decreases at a specific frequency of 4 kHz or less, a so-called coincidence effect, and a drop in frequency in a high-frequency region occurs. At the same time, it sounds unpleasant.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and increases the soundproofing effect, prevents the occurrence of an unpleasant audible sound due to the coincidence effect in a treble region, and improves the sound insulation performance in a bass region. An object of the present invention is to provide a soundproof panel that can be improved.

[0006]

According to a first aspect of the present invention, there is provided a soundproofing panel according to the first aspect of the present invention, comprising a vertical frame, a horizontal bar, and a middle bone. A thin surface plate is stuck on both the inner and outer surfaces of the frame body, and a middle crosspiece composed of a plurality of strip-shaped reinforcing plates is provided on the back surface of the inner and outer surface plates between the vertical crosspiece and the horizontal crosspiece of the frame body facing each other. , Which are separated from each other in a non-contact state and alternately provided in a non-faced state.

According to a second aspect of the present invention, in the first aspect, the surface plate has a thickness of 6 mm or less,
It is characterized by being made of a thin plate material having a Young's modulus of 4 × 10 ⁹ N / m ² or less.

According to a third aspect of the present invention, in the first or second aspect of the invention, the middle bone is separated in a non-contact state with a buffer between the inner and outer surface plates. It is characterized by being.

That is, the soundproof panel according to the present invention comprises:
A surface plate to be stuck on both inner and outer surfaces of a square framed frame composed of a vertical beam, a horizontal beam, and a middle bone has a thickness of 6 mm or less and a Young's modulus of 4 × 10 ⁹ N / m ² or less. Since it is formed of a thin plate material, it is possible to increase the frequency of the drop to 4 kHz or more, thereby preventing a sharp decrease in transmission loss due to a coincidence effect in a high-pitched sound region.

[0010] Further, a middle crosspiece composed of a plurality of strip-shaped reinforcing plates attached to the back surfaces of both the inner and outer front plates is released alternately between the vertically and horizontally opposed spaces of the frame body. In the non-facing state (staggered), vibration at the center of the surface plate is not restricted, and repulsive vibration can be suppressed. At the same time, vibration at the center of the surface plate and the frame It is difficult to resonate because the phase of the vibration is shifted from the vibration of the outer peripheral portion of the surface plate, which is the attaching portion, and it is possible to compensate for the drop in the transmission loss in the low-tone region due to the thinning of the surface plate.

Further, since the middle bone is separated in a non-contact state by interposing a buffer between the inner and outer surface plates, it is possible to suppress the propagation of solid vibration at the center of the inner and outer surface plates. Become.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings shown in FIGS. FIG.
As shown in FIG. 1, reference numeral 1 denotes a frame constituting the soundproof panel according to the present invention.

As shown in FIGS. 2 to 4, the frame 1 has a rectangular shape framed by vertical bars 2, 2 and horizontal bars 3, 3, and a middle bone 4. Thin surface plates 5A and 5B are adhered to both surfaces. The inner bone 4 is divided into an inner bone 4A and an outer bone 4B, and a buffer (elastic material) 4C is interposed between the inner and outer bones 4A and 4B, so that the inner and outer surfaces 5A and 5B are not in contact with each other. It is separately formed so as to be in a state.

On the back side of each of the inner and outer surface plates 5A, 5B, middle rails 6A, 6B formed of a plurality of strip-like reinforcing plates extending between the vertical rails 2, 2 of the frame 1 facing each other. It is provided symmetrically with respect to the middle bone 4 at predetermined intervals. These middle rails 6A and 6B are alternately arranged in a non-facing state (staggered foot shape), respectively, and are arranged so as to be separated from the respective vertical rails 2 and 2 in a non-contact state. , 3 so as to maintain a non-contact state.

Reference numerals 7A and 7B denote fire and soundproof members such as glass wool interposed in spaces formed on both left and right sides of the middle bone 4.

The frame 1 has a width of, for example, 40 mm.
Vertical bars 2 and 2 each made of a square bar having a thickness of 45 mm and a length of 2120 mm, and a width of 40 mm, a thickness of 45 mm and a length of 804 mm
Horizontal bars 3, 3 consisting of square timber, width 80 mm, thickness 45 m
212, framed with m, 2040 mm long bone 4
The surface plates 5A and 5B which have a rectangular dimension of 0 mm × 884 mm and are adhered to both the inner and outer surfaces thereof have a thickness of, for example, medium fiberboard (MDF), particle board or plywood of 6 mm or less ( For example, it is made of a thin plate material having a Young's modulus of 4 × 10 ⁹ N / m ² or less.

On the other hand, the reinforcing plates forming the middle rails 6A and 6B are, for example, strips having a thickness of 9 to 18 mm, such as plaster boards, particle boards or plywood, for example, having a width of 60 mm.
mm, a thickness of 12.5 mm, and a length of 1,820 mm, which are fixed to the back surfaces of the inner and outer surface plates 5A, 5B with staples, and both ends of the inner and outer plates 5A, 5B, Are separated from each other so as to be separated by at least 50 mm or more.

[0018]

As is clear from the above description, the soundproof panel according to the present invention is a surface plate that is attached to both the inner and outer surfaces of a rectangular framed frame composed of a vertical beam, a horizontal beam, and a middle bone. To
Since it is formed of a thin plate material having a thickness of 6 mm or less and a Young's modulus of 4 × 10 ⁹ N / m ² or less, the frequency of the drop can be increased to 4 kHz or more. This can prevent a sudden decrease in transmission loss due to the above, and can reduce the unpleasant sound in the conventional sense of hearing.

Further, a middle crosspiece composed of a plurality of strip-shaped reinforcing plates attached to the back surfaces of the inner and outer front surface plates, respectively, is separated from each other between the vertically and horizontally opposed crosspieces of the frame and alternately. Since it is arranged in a non-face-to-face state (staggered), vibration at the center of the surface plate is not restricted, repulsive vibration can be suppressed, and vibration at the center of the surface plate is attached to the frame. Since the phase of the vibration of the outer peripheral portion of the surface plate, which is the attachment portion, is out of phase and it is difficult to resonate, it is possible to compensate for the drop in transmission loss in the low sound range due to the thinning of the surface plate,
It is possible to maintain stable sound insulation performance from a low sound area to a high sound area (125 Hz to 4 kHz).

Furthermore, since the middle bone is separated in a non-contact state with a buffer between the inner and outer surface plates, the propagation of solid vibrations at the center of the inner and outer surface plates can be suppressed. Thereby, it is possible to prevent the generation of the solid-borne sound.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a soundproof panel according to the present invention, with a part cut away.

FIG. 2 is a sectional view taken along the line II of FIG. 1;

FIG. 3 is a sectional view taken along the line II-II in FIG. 2;

FIG. 4 is an exploded perspective view of the same.

FIG. 5 is an explanatory view showing a conventional soundproof panel with a part cut away.

FIG. 6 is a sectional view of an essential part of the conventional soundproof panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame body 2, 2 Vertical bar 3, 3 Horizontal bar 4 Middle bone 4A Inner bone 4B Outer bone 4C Buffer (elastic material) 5A Surface plate 5B Surface plate 6A Middle bar (reinforcement plate) 6B Middle bar (reinforcement plate)

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[Procedure amendment]

[Submission date] February 7, 2000 (2000.2.7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

According to a first aspect of the present invention, there is provided a soundproof panel according to the first aspect of the present invention, wherein the soundproof panel is provided between a vertical beam, a horizontal beam and a horizontal beam.
A thin surface plate is adhered to both the inner and outer surfaces of the rectangular framed frame with the middle bone connecting the two, and the inner crosspiece comprising a plurality of strip-shaped reinforcing plates on the back surface of the inner and outer surface plates is provided. It is characterized in that the vertical and horizontal rails of the frame body which are opposed to each other are released in a non-contact state and are alternately provided in a non-facing state.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

According to a second aspect of the present invention, in the first aspect of the invention, the middle bone is loosened between the inner and outer surface plates.
It is characterized in that it is separated in a non-contact state with an impinging body in between .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

According to a third aspect of the present invention, in the first or second aspect, the surface plate has a thickness of 6 mm.
A sheet material whose Young's modulus is 4 × 10 ⁹ N / m ² or less
And wherein the Ranaru.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

As shown in FIGS. 2 to 4, the frame 1 has a rectangular shape framed by vertical bars 2, 2 and horizontal bars 3, 3, and a middle bone 4. Thin surface plates 5A and 5B are adhered to both surfaces. As shown in FIG. 1, the center bone 4 is passed between the crossbars 3 and 3 and
The crosspieces 3 are connected to each other, and further divided into an inner bone 4A and an outer bone 4B, and a buffer (elastic material) 4C is interposed between the inner and outer bones 4A and 4B, so that the inner and outer surface plates are separated. 5A and 5B are separately formed so as to be in a non-contact state.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

[0018]

As is apparent from the above description, the soundproofing panel according to the present invention has a rectangular frame with a vertical crosspiece, a horizontal crosspiece, and a middle skeleton connecting between the horizontal crosspieces. it on the rear surface of the inner and outer face sheets are bonded to inner and outer surfaces of the frame body has
A middle crosspiece consisting of a plurality of strip-shaped reinforcing plates attached to
Release the body between the vertical and horizontal rails facing each other.
That they are arranged alternately in a non-facing state (staggered)
Therefore, vibration at the center of the surface plate is not restricted, and repulsive vibration is suppressed.
Vibration and frame at the center of the surface plate
The phase with the vibration of the outer peripheral part of the surface plate, which is the attachment part with the body,
Low frequency due to thinning of the surface plate because it is difficult to resonate due to displacement
Can compensate for the drop in transmission loss in the
From low to high frequency range (125 Hz to 4 kHz)
Stable sound insulation performance can be maintained up to this point.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

Further, the surface plate is formed to have a thickness of 6 mm or less,
Formed of a sheet material having a modulus of 4 × 10 ⁹ N / m ² or less
Therefore, increase the drop frequency to 4 kHz or more
To achieve a coincidence effect in the treble region.
The transmission loss can be prevented from sharply decreasing due to
It is possible to reduce the unpleasant sound in the auditory sense as before .

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Naohisa Arakawa 10-1 Nakazawa-cho, Hamamatsu-shi, Shizuoka F-term in Yamaha Corporation (reference) 2E001 DF02 DF06 FA06 GA07 GA12 GA59 GA63 HA03 HA33 HC01 HC02 HC04 HC13 LA03 2E162 BA01 BA06 BB07 BB08 CC05 CC08 DA00 5D061 BB12 BB35

Claims (3)

[Claims] 1. A thin frame plate is attached to both the inner and outer surfaces of a frame formed by a vertical frame, a horizontal frame and a middle frame, and a plurality of strip-shaped reinforcements are provided on the back surfaces of the inner and outer frames. A soundproof panel characterized in that a middle crosspiece made of a plate is released in a non-contact state between a vertical crosspiece and a horizontal crosspiece facing each other of the frame body, and is alternately provided in a non-facing state. 2. The soundproof panel according to claim 1, wherein the surface plate is made of a thin plate material having a thickness of 6 mm or less and a Young's modulus of 4 × 10 ⁹ N / m ² or less. 3. The soundproof panel according to claim 1, wherein the middle bone is separated in a non-contact state with a buffer between the inner and outer surface plates.