JP2003268964A - Base board and double floor structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base board for suppressing impact sound and to provide a double floor structure without allowing dust or rubbish to intrude under a floor. <P>SOLUTION: The base board 200 has two parts of an upper base board part 200U and a lower base board part 200D which is thinner than the upper base board part 200U. When the base board 200 is attached by nails 220 at a position where a rear face of the upper base board part 200U comes into contact with a wall face 182L, the lower base board part 200D is positioned so that a void exists rearward thereof. In addition, the lower base board part 200D is elastically deformed when external force is applied in the direction of an arrow A. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skirting board attached to a lower end of a wall and a double floor structure which is one of building structures.

[0002]

2. Description of the Related Art Generally, in a building such as an apartment house, various soundproofing measures are taken in order to prevent an impact sound generated in one room space from being generated as noise in an adjacent room space. For example, as a sound insulation measure for the double floor structure,
It has been proposed to open a gap near the wall to allow air in the underfloor space to escape.

[0003]

However, the impact sound generated in a certain room propagates to the adjacent room space through the wall or floor. Therefore, sound insulation by conventional soundproofing measures has not been sufficient. In addition, it has been pointed out that in a double-floor structure in which a gap is provided near the wall, dust and debris fall under the floor from the gap and become unsanitary.

The present invention has been made in view of the above-mentioned circumstances, and its object is to prevent skirting boards capable of suppressing impact noise and dust and dirt from entering the floor. Not to provide a double floor structure.

[0005]

SUMMARY OF THE INVENTION The present invention provides a skirting board having a portion which, when attached to a wall, is displaced in the direction of the external force when the external force acts. To do. According to such a skirting board, when an object collides with the skirting board, the skirting board is displaced in the direction of the collision force. As a result, the contact time between the object and the skirting board at the time of collision becomes long, so that the level of the impact sound generated in the skirting board is suppressed.

Further, from another viewpoint different from the above, the present invention is formed by a floor base material supported by a plurality of support legs that are continuous with the base floor, and the base floor and the floor base material. A double floor comprising an opening for discharging air from the underfloor space to the outside or sucking the external air into the underfloor space, and a pressure increasing means for increasing the air pressure in the underfloor space. Provide a structure. According to such a double floor structure, air is exhausted or sucked from the opening in association with the vibration of the floor base material due to the impact sound generated in the room space. As a result, the atmospheric pressure in the underfloor space becomes equal to the atmospheric pressure, so that the impact sound is less likely to propagate to the foundation floor. Further, when the pressure in the underfloor space is increased by the pressure increasing means, air is discharged from the opening. This prevents dust from flowing into the underfloor space through the opening.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a diagram showing a configuration of a double floor structure using a skirting board according to the embodiment of the present invention. In this figure, the foundation floor 110 and the wall 180L,
180R is a part of the frame of RC (Reinforced Concrete) building. The double floor structure in the present embodiment,
It is installed in the space formed by the base floor 110 and the walls 180L and 180R. The building in which the double floor structure is installed is not limited to the RC structure, and for example, a steel frame structure or an SRC (Steel Framed Reinforced Concrete)
e) It may be manufactured or the like.

On the foundation floor 110, support legs 130 are installed via a vibration isolating member 120 at a predetermined interval. The support legs 130 support the floor base material 150 so as to be substantially horizontal via a support member 140 provided at the upper end. The floor base material 150 includes a wall 180L on the left side in the drawing,
It is arranged with a gap D that functions as a ventilation opening.
The details of the gap D will be described later. Then, a finishing material 160 such as a flooring, which becomes a floor surface of a double floor, is attached to the upper surface of the floor base material 150. In addition, at the right end of the foundation floor 110 in the figure, a finishing material 162 that becomes the floor surface of the direct floor is provided.
Is directly attached. The room space 100 is a space of a room (for example, a front door of a house) having a two-level floor level including the double floor (finishing material 160) and the direct floor (finishing material 162).

Now, the room space 100 on the wall surface 182L
A skirting board 200 is attached to the lower end as viewed so as to extend substantially parallel to the finishing material 160 (direction perpendicular to the paper surface). The skirting board 200 is a member that is attached in order to prevent dirt or damage from being caused by a human foot or the like hitting the lowermost portion of the wall surface 182L. Such a skirting board 200 is generally made of wood, synthetic resin, or the like.

FIG. 1 is an enlarged view of the cross-sectional shape of the skirting board 200 in FIG. 2 and its peripheral structure. As shown in this figure, the skirting board 200 has two parts, an upper skirting board 200U and a lower skirting board 200D. Baseboard top 200
Each of the front surface of U (room space 100 side) and the front surface of the skirting board lower portion 200D is formed so as to be located on the same plane. On the other hand, the rear surface of the lower part of the skirting board 200D (on the wall 180L side)
Are formed so that the distance from the front surface is shorter than the back surface of the upper part 200U of the skirting board. That is, skirting board 2
00 is formed so that the lower portion is thinner than the upper portion. Under such a configuration, the skirting board 200 has the skirting board upper portion 20.
At the position where the back surface of 0U and the wall surface 182L contact each other, the nail 22
Attached to wall 180L by zero. At this time, the skirting board 200 is attached such that the lower end of the skirting board 200 is above the finishing material 160 by a gap d that functions as a ventilation port. In addition,
The gap d will be described later.

As described above, when the skirting board 200 is attached to the wall 180L, the skirting board lower portion 200D is positioned so that a space exists behind it. Also, the lower part of the skirting board 200D
Has a small thickness. With these, the lower part of the skirting board 200D
Is elastically deformed when an external force acts in the direction of arrow A (the thickness direction of the skirting board 200). More specifically, the lower part of the skirting board 2
00D is configured to be bendable in the A direction with the joint with the upper part 200U of the skirting board as an approximate axis. The skirting board 200 in the present embodiment has such a configuration for the following reasons.

For example, when cleaning the floor surface (finishing material 160) of a double floor with an electric vacuum cleaner, the suction port 400 of the electric vacuum cleaner may collide with the skirting board 200. In general,
The suction port is made of hard synthetic resin. Therefore, when the suction port 400 collides with a conventional skirting board that is not elastically deformed, a large impact sound is generated in the skirting board. Such an impact sound propagates to the foundation floor or the like through the wall where the skirting board is installed, and is re-emitted as noise in the adjacent room space.

Therefore, the skirting board 200 according to the present embodiment.
Is to suppress the level of impact sound when an object collides,
It is elastically deformable. That is, when a hard object such as the suction port 400 of the vacuum cleaner collides in the direction A,
The skirting board lower part 200D elastically deforms in the A direction. As a result, the contact time at the time of collision becomes long, and the peak level of the impact force is reduced. As a result, the wall 180L and the foundation floor 1
The vibration energy propagating through 10 or the like is small, and as a result, the noise generated in the adjacent room space is suppressed.

Description will be returned to FIG. When an object collides with the finishing material 160 and an impact sound is generated, the impact sound is transmitted through the air in the underfloor space 170 formed by the support leg 130 having the vibration isolator 120, the floor base material 150, and the foundation floor 110. And propagate to the base floor 110. In this way, the vibration damping member 1
By interposing 20, the propagation of impact sound in the double floor is suppressed as compared with the direct floor. However, in the conventional double floor structure, since the underfloor space 170 is in a closed state, when an impact sound is generated, the air layer comes to have the effect of an air spring, and most of the vibration energy is transmitted to the air. It was

Therefore, in the present embodiment, there is provided a ventilation port that connects the underfloor space 170 and the room space 100. That is, the floor base material 150 is arranged with the clearance D from the wall surface 182L as described above. Also,
The skirting board 200 is attached so that its lower end is located above the finishing material 160 by a gap d. Therefore, if the atmospheric pressure of the underfloor space 170 becomes higher than the atmospheric pressure of the room space 100 during the vibration of the floor base material 150, the air in the underfloor space 170 will pass through the ventilation openings (the gap D and the gap d).
Is discharged to. On the other hand, the atmospheric pressure of the underfloor space 170 is the room space 1
When the atmospheric pressure is lower than 00, the air in the room space 100 is sucked into the underfloor space 170 through the ventilation port. This allows
Since no pressure wave is generated in the underfloor space 170, the energy of impact sound propagating through the underfloor space 170 is reduced. As a result, the energy of the impact sound radiated to the adjacent room space via the foundation floor 110 and the like is reduced, and the noise is suppressed.

However, in the case where the ventilation port is provided between the room space 100 and the underfloor space 170 as described above, when the atmospheric pressure of the room space 100 becomes higher than the atmospheric pressure of the underfloor space 170, the room space 1
The dust in 00 may pass through the gap d and the gap D and move to the underfloor space 170. In addition, dust may move from the room space 100 to the underfloor space 170 even if it is simply dropped. Therefore, the double-floor structure according to the present embodiment includes the blower device 300 on the step surface between the finishing material 160 (double floor) and the finishing material 162 (straight floor). The air blower 300 includes a fan and the like, and is used for the room space 10
Zero air is forced to flow into the underfloor space 170. The filter 310 is detachably provided on the side of the room space 100 of the blower 300, and prevents the passage of dust. Also,
The remote controller 320 is provided on a wall surface or the like, and transmits to the blower device 300 instructions such as on / off of air blowing by the user and adjustment of air volume during air blowing.

With such a structure, when the air blower 300 starts to blow air, the air in the room space 100 is forced to flow into the underfloor space 170, as indicated by the broken line in FIG. When air flows into the underfloor space 170,
Since the atmospheric pressure in the underfloor space 170 is higher than the atmospheric pressure in the room space 100, the air in the underfloor space 170 is discharged into the room space 100 through the gap D and the gap d. Due to the wind pressure of the air discharged into the room space 100 from the gap d, the movement of dust from the room space 100 to the underfloor space 170 is prevented in the double-floor structure according to the present embodiment.

On the other hand, the air blower 300 has a filter 310.
Is provided, the dust in the room space 100 does not flow into the underfloor space 170. User filter 3
If 10 is clogged, it is removed from the air blower 300, and maintenance is performed by washing with water. In addition, if a filter 310 having a function of removing fine particles in the air and a deodorizing function in addition to the function of removing dust is attached, the room space 1
It is possible to perform 00 air cleaning.

Further, at the time of cleaning the finishing material 160, by strengthening the wind force by the blower device 300,
Dust and the like is blown off from the entry corner formed by the finishing material 160 and the wall 180L. As a result, the suction force of the vacuum cleaner is assisted, and the efficiency of cleaning the inside corner is improved.

In addition, according to the double floor structure of the present embodiment, the air in the room space 100 and the air in the underfloor space 170 are circulated, so that the temperature of the room space 100 and the temperature of the underfloor space 170 are different from each other. Are almost equal. This prevents dew condensation under the floor.

The building material constituting the underfloor space 170 is
Since the air in the underfloor space 170 flows into the room space 100, it is desirable to use a substance that does not release chemical substances harmful to the human body, such as formalin. Even if a building material that releases harmful substances is used in the underfloor space 170, according to the double floor structure of the present embodiment, the air in the underfloor space 170 is
It is circulated with the air in the room space 100 instead of being closed. Therefore, by ventilating the room space 100, it is possible to volatilize the harmful substances over the years.

<Modification> The above-described embodiment is merely an example and shows one aspect of the present invention, and can be arbitrarily modified within the scope of the present invention. So below,
Various modifications will be described.

For example, the skirting board 20 in the above-described embodiment.
Although 0 indicates a configuration in which the lower part is elastically deformed, the present invention is not limited to this. For example, as shown in FIG. 4, a skirting board 23 including a hollow portion 234 and an opening 232.
It may be 0. By providing the hollow portion 234 in this manner, the thickness of the portion forming the front surface of the skirting board 230 is reduced, so that the front surface of the skirting board 230 is formed in the thickness direction (direction A).
It is elastically deformed by an external force acting on. As a result, the impact sound generated on the skirting board 230 is suppressed. The opening 232 is provided so that the nail 220 can pass through when the skirting board 230 is attached to the wall 180L by the nail 220. Further, as shown in FIG. 5, a hollow portion 242 having no opening 232 may be provided. The skirting board 240 has hollow portions 2 at predetermined intervals in the longitudinal direction.
42. When the skirting board 240 is attached to the wall 180L, the nail 220 is penetrated through the non-hollow portion (solid portion), and the skirting board 240 is attached.

In the above-described embodiment and its modification, the skirting board which can be elastically deformed has been described. However, a cushioning material for absorbing an external force acting on the skirting board may be further provided. For example, as shown in FIG. 6, a cushioning material 250 that absorbs vibration may be provided behind the skirting board lower portion 200D that is elastically deformable (on the side of the wall 180L). Accordingly, at the time of collision, the cushioning material 250 absorbs the collision force, and
When the impact sound is generated (that is, when the skirting board 200 is vibrating), the cushioning material 250 absorbs the energy of vibration, so that the vibration energy that is solidly propagated to the wall 180L is further reduced. In addition, the cushioning material 2 on the skirting board 200
By providing 50, the skirting board 200 (the skirting board upper part 200
U, lower skirting board 200D, cushioning material 250) and wall 180
A spring-mass system composed of L functions as a low-pass acoustic filter. As a result, the impact sound in the high frequency range, which is especially called an offensive to the ears, is further suppressed. As the cushioning material 250, a rubber material, a gel material, a foam material, or the like can be used.

The skirting board having the cushioning material 250 is shown in FIG.
The present invention is not limited to the example shown in FIG. 1, and the present invention can be arbitrarily applied as long as it has a configuration including the cushioning material 250 that absorbs impact noise. For example, the configuration shown in FIGS. 7A to 7C may be adopted. this house,
In the skirting board 270 shown in FIG. 7B, an upper portion 272 of the “U” -shaped skirting board holds a lower skirting board 274 via an elastic cushioning material 250. As a result, the lower part of the skirting board 27
4 can be elastically deformed, and the shock applied to the lower part 274 of the skirting board is absorbed by the cushioning material 250.

The skirting board 280 shown in FIG.
Is an upper part 282 of the skirting board, a lower part 284 of the skirting board and the cushioning material 25.
It consists of zero. An engaging portion 282h is provided on the skirting board upper portion 282.
Is formed, and the lower part 284 of the skirting board has an engaging part 284h.
Are formed. Each of the engaging portion 282h and the engaging portion 284h engages with each other. With the skirting board 280 attached to the wall 180L, the skirting board upper portion 282 is
The skirting board lower part 284 is held so that the skirting board lower part 284 can be elastically deformed in the A direction with the engaging portion as an approximate axis. In addition, the cushioning material 2 provided behind the lower part 284 of the skirting board.
50 plays a role of absorbing the impact sound generated in the lower part 284 of the skirting board.

Further, in the above-described embodiment, the skirting board having a shape in which the lower portion is thinner than the upper portion has been described, but the present invention is not limited to this, and the contact time with the collision body at the time of collision becomes long. Any skirting board will do. That is, a skirting board having a portion that is displaced in the direction of the external force when the external force is applied may be used. For example, the skirting board 260 shown in FIG. 8 has a plate-shaped front surface portion 265 and an elastic cushioning material 250 located behind it. The skirting board 260 is attached to the wall 180L by a nail 220 penetrating the center in the vertical direction. With this configuration, when a force in the thickness direction acts on the front surface portion 265,
The front surface portion 265 swings about a vertical line of the paper passing through the nail hole 267 as an approximate axis. As a result, the contact time with the collision object becomes longer, and the level of the impact sound generated is suppressed.

Further, in the above-mentioned embodiment, an example in which the skirting board 200 is applied to the double floor structure is shown, but the invention is not limited to this. For example, the baseboard 200 may be attached to a wall that is in contact with the floor. In addition, in the case of such a configuration, since a ventilation hole between the room space 100 and the underfloor space 170 is not necessary, the lower end of the skirting board 200 can be attached to the wall so as to abut the finishing material 162. .

In addition to the structure of the double-floor structure in the above-mentioned embodiment, a duct may be arranged in the underfloor space 170. That is, one end of the duct is connected to the air blower 300, and the other end is at a position where air is evenly discharged from the ventilation openings (the gaps D and d in the above-described embodiment) (for example, the center of the underfloor space 170). ). As a result, the air is evenly discharged from the ventilation port, which effectively prevents the movement of dust to the underfloor space 170.

Further, in the above-described embodiment, the example in which the air blower 300 for inflowing the air of the room space 100 into the underfloor space 170 is shown, but the present invention is not limited to this. For example, a configuration may be provided in which an air blower that allows air outside the building to flow into the underfloor space 170 is provided. This prevents dust and the like from flowing into the underfloor space 170 through the ventilation port.

[0031]

As described above, according to the present invention, there is provided a skirting board capable of suppressing impact noise, and a double floor structure in which dust and dirt do not enter under the floor. .

[Brief description of drawings]

FIG. 1 is a sectional view of a skirting board according to the present embodiment.

FIG. 2 is a diagram showing a configuration of a double floor structure using a skirting board according to the present embodiment.

FIG. 3 is a diagram showing a state of air blowing by an air blowing device provided in the double floor structure.

FIG. 4 is a diagram showing a skirting board according to a modified example of the present embodiment.

FIG. 5 is a diagram showing the same baseboard.

FIG. 6 is a diagram showing the same baseboard.

FIG. 7 is a diagram showing the same baseboard.

FIG. 8 is a diagram showing the same baseboard.

[Explanation of symbols]

100 ... Room space, 110 ... Foundation floor, 120 ... Anti-vibration member,
130 ... Support legs, 140 ... Support member, 150 ... Floor base material, 160, 162 ... Finishing material, 170 ... Underfloor space, 18
0L, 180R ... Wall, 182L ... Wall surface, 200 ... Baseboard,
200U ... Upper baseboard, 200D ... Lower baseboard, 250 ... Cushioning material, 300 ... Blower, 310 ... Filter, 320 ...
Remote controller.

Claims (4)

[Claims] 1. A skirting board comprising a portion which, when attached to a wall, is displaced in the direction of the external force when the external force acts. 2. The portion is thinner than the other constituent portions, and is positioned such that when the skirting board is attached to the wall, a void is present behind the skirting board. Baseboard described in. 3. The skirting board according to claim 1, further comprising a cushioning material that absorbs an external force. 4. An underfloor material, which is supported by a plurality of support legs connected to a foundation floor, and the air in an underfloor space formed by the foundation floor and the underfloor material is discharged to the outside or the underfloor space. A double floor structure comprising: an opening for sucking the outside air; and a pressure increasing means for increasing the air pressure in the underfloor space.