JP7256497B2 - Sound-absorbing material holding structure and construction method thereof - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound absorbing material holding structure that holds a sound absorbing material with a predetermined gap from the surface of the skeleton of a building, and a construction method for this sound absorbing material holding structure.

Conventionally, there have been proposed methods of supporting a member at a position spaced apart from the surface of the skeleton (see Patent Documents 1 to 3).
In Patent Document 1, a long support member vertically penetrating a ceiling plate, a thin plate member supported by the support member and installed on the lower surface of the ceiling plate, and four members arranged on the lower surface of the ceiling plate A ceiling material fall prevention structure having a protective wire is shown.
Patent Literature 2 shows a ceiling material that includes a joist, a joiner attached to the joist, and a ceiling board attached to the joiner.
In Patent Document 3, a substrate is prepared by laminating a resin decorative film and a metal plate, both sides of the substrate are raised to form side walls, and a heat insulating and sound absorbing material is loaded inside the side walls. Ceiling material is shown.

JP 2015-28270 A JP 2014-74327 A Japanese Patent Application Laid-Open No. 2015-214800

When glass wool is used as the sound absorbing material, unevenness may occur on the surface of the sound absorbing material due to the high flexibility of the sound absorbing material.
SUMMARY OF THE INVENTION An object of the present invention is to provide a structure for holding a sound absorbing material and a method for constructing the same that can prevent the surface of the sound absorbing material from becoming uneven when the sound absorbing material is arranged with a predetermined gap from the surface of the building frame. and

As a structure for holding the sound absorbing material, the present inventors provided a penetrating member on the surface of the frame without providing a horizontal member that supports the sound absorbing material from the back side on the surface of the frame such as the bottom surface of the floor slab or the wall surface. Focusing on the fact that the sound absorbing material can be held at a predetermined height position by holding the sound absorbing material floating from the surface of the building frame with a washer, the inventors invented a sound absorbing material holding structure and its construction method.
The sound absorbing material holding structure (for example, the sound absorbing material holding structure 1 described later) of the first invention is a building (for example, the building 2 described later) with a predetermined gap from the building body surface (for example, the building body surface 3 described later). A sound absorbing material holding structure for holding a sound absorbing material, comprising a flat plate portion (for example, a flat plate portion 11 to be described later) adhered to the surface of the building frame and a shaft portion (for example, a shaft portion 12 to be described later) extending substantially vertically from the flat plate portion. ), a washer (for example, a washer 30 described later) attached to an intermediate position of the shaft of the penetrating member (for example, a washer 30 described later), and a tip of the shaft of the penetrating member. a cap (for example, a cap 50 to be described later), and a sound absorbing material containing glass wool through which the shaft portion is passed and sandwiched between the washer and the cap.

According to this invention, the flat plate portion of the penetrating member is attached to the surface of the skeleton, and the washer is attached to the shaft portion of the penetrating member. In this state, the penetrating member is covered with a sound absorbing material, the sound absorbing material is passed through the shaft, and a cap is attached to the end of the shaft that has passed through the sound absorbing material. As a result, the sound absorbing material is sandwiched between the washer and the cap with a predetermined gap from the surface of the frame. At this time, it is possible to prevent unevenness from occurring on the surface of the sound absorbing material by appropriately adjusting the separation distance of the washer from the surface of the skeleton.
In addition, by applying an adhesive to the flat plate portion of the penetrating member and adhering it to the building frame surface, the penetrating member can be attached to the building frame surface not only of steel but also of concrete.
The instant welding method of Sanko Techno Co., Ltd., which is a similar technology, can be applied only to steel materials, and cannot be applied to concrete surfaces. Specifically, an insul weld pin (registered trademark) is welded to the surface of the steel material using a dedicated welding gun, and a sound absorbing material is attached to the insul weld pin.

A sound absorbing material holding structure according to a second aspect of the invention is characterized in that the washer is arranged on the inner surface of the sound absorbing material, and the cap is arranged on the outer surface of the sound absorbing material.

According to this invention, since the washer is arranged on the inner surface of the sound absorbing material and the sound absorbing material is engaged with this washer, another material (for example, a heat insulating material such as urethane foam) is provided on the back side of the sound absorbing material. Even in this case, the sound absorbing material can be installed with a gap of any width from the surface of the building frame.
Moreover, by installing the washer at the intermediate position of the shaft part and sandwiching the sound absorbing material between the washer and the cap, the sound absorbing material can be fixed more securely than when the outer surface of the sound absorbing material is fixed only by the cap.

A method for constructing a sound absorbing material holding structure according to a third aspect of the invention is the above-described method for constructing a sound absorbing material holding structure, wherein the flat plate portion of the penetrating member is adhered to the surface of the building frame, and the shaft portion of the penetrating member is attached. A step of covering with a curing means (for example, a curing tube 14 described later) (for example, steps S1 and S2 described later), and a step of spraying a heat insulating material (for example, a urethane foam material 5 described later) on the building frame surface (for example, a step of removing the curing means attached to the shaft portion of the penetrating member and attaching a washer to the shaft portion of the penetrating member (for example, step S4 described later); The method includes a step of penetrating a sound absorbing material (for example, step S5 described later) and a step of attaching the cap to the tip of the shaft portion of the penetrating member (for example, step S6 described later).

According to this invention, there are effects similar to those of the first invention described above.

According to the present invention, it is possible to provide a sound absorbing material holding structure and a method of constructing the sound absorbing material that can prevent the surface of the sound absorbing material from becoming uneven when the sound absorbing material is arranged with a predetermined gap from the surface of the building frame.

1 is a cross-sectional view of a sound absorbing material holding structure according to an embodiment of the present invention; FIG. FIG. 2 is an exploded perspective view of the sound absorbing material holding structure shown in FIG. 1; 4 is a flowchart of a procedure for constructing a sound absorbing material holding structure; FIG. 10 is an explanatory diagram of the construction procedure of the sound absorbing material holding structure (No. 1: state of attachment of the penetrating member to the surface of the skeleton); FIG. 10 is an explanatory diagram of the construction procedure of the sound absorbing material holding structure (No. 2: state of spraying of foamed urethane material onto the body surface). FIG. 10 is an explanatory diagram of the construction procedure of the sound absorbing material holding structure (No. 3: State of attachment of the washer and the washer retainer to the penetrating member). FIG. 10 is an explanatory diagram of the construction procedure of the sound absorbing material holding structure (No. 4: State of attachment of the sound absorbing material to the penetrating member).

The present invention provides a sound absorbing material holding structure for attaching a sound absorbing material across a gap to the surface of a building frame such as a floor slab or a wall surface of a building, and a construction method thereof.
An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view of a sound absorbing material holding structure 1 according to one embodiment of the present invention.
The sound-absorbing material holding structure 1 holds a sound-absorbing material 4 with a predetermined gap from a frame surface 3 such as the lower surface of a floor slab or a wall surface of a building 2 . In this sound absorbing material holding structure 1, a foamed urethane material 5 as a heat insulating material is sprayed onto the surface 3 of the building body.

The sound absorbing material holding structure 1 includes a penetrating member 10 , a tube 20 , a washer 30 , a washer retainer 40 , a cap 50 , a sound absorbing material 4 and a foamed urethane material 5 . FIG. 2 is an exploded perspective view of the sound absorbing material holding structure 1. FIG.
The penetrating member 10 includes a rectangular flat plate portion 11 adhered to the skeleton surface 3 and a shaft portion 12 extending substantially perpendicularly from the flat plate portion 11 . A screw 13 is formed on the outer peripheral surface of the shaft portion 12, and the tip of the shaft portion 12 has a sharp shape.
The tube 20 is made of vinyl chloride, through which the shaft portion 12 is inserted, and one end side is in contact with the flat plate portion 11 . The dimension from the body surface 3 to the tip of the tube 20 is _L1 .

The washer 30 is attached to an intermediate position of the shaft portion 12 of the penetrating member 10 . The washer 30 has a circular shape and has a through hole 31 formed in the center thereof, through which the shaft portion 12 is inserted.
The washer retainer 40 has a circular shape and is cut in the center to form a pair of locking pieces 41 facing each other. When the shaft portion 12 is inserted into the gap between the pair of locking pieces 41 of the washer retainer 40 , the pair of locking pieces 41 are locked to the screw 13 of the shaft portion 12 . Therefore, by attaching the washer 30 and the washer retainer 40 to the shaft portion 12 while the tube 20 is attached to the shaft portion 12 , the washer 30 is sandwiched between the tip surface of the tube 20 and the washer retainer 40 .

At this time, the dimension from the body surface 3 to the washer 30 is _L1 , and by appropriately adjusting the length dimension of the tube 20, the dimension of the washer 30 from the body surface 3 can be adjusted.
The cap 50 is attached to cover the tip of the shaft portion 12 of the penetrating member 10 . The cap 50 includes a circular flat plate portion 51 and a cylindrical portion 52 extending substantially vertically from the flat plate portion 51 . The tip of the shaft portion 12 of the penetrating member 10 is inserted into the cylindrical portion 52 of the cap 50 .

The sound absorbing material 4 is made by wrapping glass wool with glass cloth, and is sandwiched between the washer 30 and the cap 50 through the shaft portion 12 of the penetrating member 10 . As a result, the washer 30 is arranged on the inner surface of the sound absorbing material 4 and the cap 50 is arranged on the outer surface of the sound absorbing material 4 .
The foamed urethane material 5 is sprayed from the body surface 3 with a predetermined thickness _L2 smaller than _L1 . Thereby, a gap is formed between the foamed urethane material 5 and the sound absorbing material 4 .

A procedure for constructing the sound absorbing material holding structure 1 described above will be described with reference to the flowchart of FIG.
In step S1, as shown in FIG. 4, the penetrating member 10 is prepared on site, the tube 20 is attached to the shaft portion 12 of the penetrating member 10, and the shaft portion 12 is not covered with the tube 20. The part is covered with a curing tube 14 as a curing means. Alternatively, the tube 20 and the curing tube 14 may be attached to the penetrating member 10 in advance at the factory.

In step S2, as shown in FIG. 4, the penetrating member 10 is attached to the skeleton surface 3 of the building. Specifically, the flat plate portion 11 of the penetrating member 10 is adhered to the skeleton surface 3 of the building.
In step S3, as shown in FIG. 5, a foamed urethane material 5 is sprayed onto the skeleton surface 3 of the building.
In step S4, as shown in FIG. 6, the curing tube 14 attached to the shaft portion 12 of the penetrating member 10 is removed, and the washer 30 and the washer retainer 40 are attached to the shaft portion 12. FIG.
In step S5, as shown in FIG. 7, the sound absorbing material 4 is attached. Specifically, the shaft portion 12 of the penetrating member 10 is penetrated by covering the sound absorbing material 4 from above the penetrating member 10 .
In step S<b>6 , the cap 50 is attached to the tip of the shaft portion 12 .

According to this embodiment, there are the following effects.
(1) The flat plate portion 11 of the penetrating member 10 is attached to the body surface 3 , and the washer 30 is attached to the shaft portion 12 of the penetrating member 10 . In this state, the sound absorbing material 4 is put on the penetrating member 10 , the shaft portion 12 is passed through the sound absorbing material 4 , and the cap 50 is attached to the tip of the shaft portion 12 . As a result, the sound absorbing material 4 is sandwiched between the washer 30 and the cap 50 with a predetermined gap from the body surface 3 . At this time, by appropriately adjusting the dimension of the washer 30 from the body surface 3 to _L1 , it is possible to prevent the surface of the sound absorbing material 4 from being uneven.
In addition, by applying an adhesive to the flat plate portion 11 of the penetrating member 10 and adhering it to the skeleton surface 3 of the building 2, the penetrating member 10 can be attached to the skeleton surface 3 even if the skeleton surface 3 is not only steel but also concrete. be able to.

(2) Since the washer 30 is arranged inside the sound absorbing material 4 and the sound absorbing material 4 is engaged with this washer 30, even if the urethane foam material 5 is provided on the back side of the sound absorbing material 4, the sound absorbing material 4 is It can be installed with a gap of any width from 3.
By installing the washer 30 at an intermediate position of the shaft portion 12 and sandwiching the sound absorbing material 4 between the washer 30 and the cap 50, the sound absorbing material 4 can be secured more securely than when the outer surface of the sound absorbing material is fixed only by the cap. can be fixed to

(3) When the urethane foam material 5 is sprayed onto the frame surface 3 of the building 2, the shaft portion 12 of the penetrating member 10 is protected in advance with the curing tube 14 to prevent the urethane foam material 5 from adhering to the shaft portion 12. do. Therefore, after spraying the foamed urethane material 5, the work of removing the foamed urethane material 5 attached to the shaft portion 12 becomes unnecessary, and the efficiency of the work can be improved.
(4) By appropriately adjusting the length of the shaft portion 12 of the penetrating member 10 and the length of the tube 20, the sound absorbing material 4 can be held in a floating state at any position from the body surface 3.

It should be noted that the present invention is not limited to the above-described embodiments, and includes modifications, improvements, etc. within the scope of achieving the object of the present invention.

DESCRIPTION OF SYMBOLS 1... Sound-absorbing material holding structure 2... Building 3... Frame surface 4... Sound-absorbing material 5... Urethane foam material (insulation material)
DESCRIPTION OF SYMBOLS 10... Penetration member 11... Flat plate part 12... Shaft part 13... Screw 14... Curing tube (curing means)
DESCRIPTION OF SYMBOLS 20... Tube 30... Washer 31... Through hole 40... Washer retainer 41... Locking piece 50... Cap 51... Flat plate part 52... Cylindrical part

Claims (3)

A sound-absorbing material holding structure for holding a sound-absorbing material with a predetermined gap from the building frame surface,
a penetrating member comprising a flat plate portion adhered to the surface of the skeleton and a shaft portion extending substantially perpendicularly from the flat plate portion;
a tube through which the shaft portion of the penetrating member is inserted;
a washer attached at the tip of the tube and at an intermediate position of the shaft of the penetrating member;
a washer retainer that engages with the shaft portion of the penetrating member and sandwiches the washer together with the tube;
a cap attached to the tip of the shaft of the penetrating member;
A sound absorbing material holding structure comprising: a sound absorbing material containing glass wool, which is sandwiched between the washer and the cap through which the shaft portion is passed. the washer is disposed on an inner surface of the sound absorbing material;
2. The sound absorbing material holding structure according to claim 1, wherein the cap is arranged on the outer surface of the sound absorbing material. A method for constructing a sound absorbing material holding structure,
The sound absorbing material holding structure includes a penetrating member having a flat plate portion adhered to the surface of the building frame and a shaft portion extending substantially perpendicularly from the flat plate portion; a washer attached to an intermediate position of the shaft portion of the penetrating member; a cap attached to the tip of a shaft portion of the penetrating member; and a sound absorbing material containing glass wool, through which the shaft portion is passed and sandwiched between the washer and the cap,
a step of bonding the flat plate portion of the penetrating member to the surface of the building frame and covering the shaft portion of the penetrating member with a curing means;
A step of spraying a heat insulating material onto the surface of the building frame;
removing the curing means attached to the shaft of the penetrating member and attaching the washer to the shaft of the penetrating member;
a step of penetrating the sound absorbing material through the shaft portion of the penetrating member;
and a step of attaching the cap to the tip of the shaft portion of the penetrating member.

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