JPH09287213A - Sound insulating floor panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the sound insulating property of a floor section by effectively reducing the shock sound to the lower floor side generated when a shock is directly applied to the floor section. SOLUTION: This sound insulating floor panel 11 is provided with a molded cement panel 13 having multiple hollow sections 19 in it, slits 21 formed on one face of the molded cement panel 13 to allow the hollow sections 19 and the outside to communicate with each other, multiple rib-like floor joist sections 23 protruded on one face of the molded cement panel 13, and a floor surface material 15 fixed to the floor joist sections 23 to form spaces 27 between one face of the molded cement panel 13 and the floor joist sections 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound insulation floor panel having a resonator.

[0002]

2. Description of the Related Art It is necessary to block sound leaking from an upper floor to a lower floor in buildings, especially floors of houses and the like. FIG. 7 is a front view showing a conventional floor panel. Conventionally, the floor panel 1 has been constructed by fixing a floor surface material (plywood, particle board, etc.) 7 to the upper surface of an extrusion-molded cement panel 5 having a plurality of hollow portions 3 with tapping screws 9 or the like. The floor panel 1 is placed and fixed between beams (not shown) to form an upper floor.

In the case of the floor panel 1 having such a structure, for example, a method of filling the hollow portion 3 (or a similar component) with a sound absorbing material such as rock wool or glass wool in order to enhance sound insulation is conceivable. . In the floor panel 1 filled with such a sound absorbing material, the sound absorbing material absorbed the sound from the upper floor that passed through the floor surface material 7, and was able to effectively block sound leakage to the lower floor.

[0004]

However, in the conventional floor panel 1 described above, the surfaces of the floor surface material 7 and the extruded cement panel 5 are joined over the entire surface.
Sound from conversations where the floor does not directly serve as a sound source can be effectively shielded, but the floor can serve as a sound source, for example, when an object falls,
The impact sound caused by the jumping of the floor on the upper floor is the impact of the floor surface material 7
From the above, it was directly propagated to the extrusion-molded cement panel 5 and transmitted to the lower floor side, and it was not possible to expect sound insulation. The present invention has been made in view of the above circumstances, and provides a sound insulation floor panel that can effectively reduce the impact sound to the lower floor caused by direct impact on the floor, and the sound insulation of the floor portion. The purpose is to improve the sex.

[0005]

To achieve the above object, the structure of a sound insulation floor panel according to the present invention comprises a molded cement panel having a plurality of hollow portions therein, and a molded cement panel formed on one surface of the molded cement panel. A slit for communicating the hollow portion with the outside, a plurality of rib-shaped joist portions projectingly provided on one surface of the molded cement panel, and one surface of the molded cement panel fixed to the joist portion And a floor surface material that forms a space sandwiched between the joists between the floors. Moreover, the sound insulation floor panel may be characterized in that the joist portion is integrally formed with the molded cement panel by using the same material as that of the molded cement panel. Further, the sound insulation floor panel may be one in which the joist formed of a material different from that of the molded cement panel is fixed to one surface of the molded cement panel.

In the sound insulation floor panel thus constructed, when an impact propagates to the floor surface material, an impact sound is generated on the lower surface of the floor surface material, that is, in the void. The impact sound generated in the void enters the hollow portion through the slit and resonates in the hollow portion to be attenuated. This prevents the impact sound from directly propagating from the floor surface material to the extruded cement panel and transmitting to the lower floor.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a sound insulation floor panel according to the present invention will be described in detail below with reference to the drawings.
1 is a perspective view showing a sound insulation floor panel according to the present invention, FIG. 2 is a view of the sound insulation floor panel shown in FIG.
It is a side view of the state which attached and constructed the sound insulation floor panel.
The sound-insulating floor panel 11 is constructed by fixing a floor surface material (plywood, particle board, etc.) 15 to the upper surface of an extrusion-molded cement panel 13 with a tapping screw 17 or the like with screws.

In the extrusion-molded cement panel 13, a plurality of elongated hollow portions 19 are arranged side by side in the width W direction in the panel extrusion direction. The hollow portion 19 is open at the front and rear end surfaces in the panel pushing direction. On the upper surface of the extrusion-molded cement panel 13, slits 21 are formed in the panel extrusion direction so as to correspond to the hollow portions 19. The slits 21 may be linear slits in the front-rear direction of the panel or intermittent slits at predetermined intervals. The slit 21 thus formed connects the hollow portion 19 and the outside.

On the upper surface of the extruded cement panel 13,
A rib-shaped joist 23 that is long in the front-rear direction of the panel is provided between the slits 21. The joist 23 is made of the same material as that of the extrusion-molded cement panel 13, and is integrally molded during extrusion. The joist 23 may be provided between the slits 21, or may be provided so as to sandwich a predetermined number (two in this example) of the slits 21. Further, the joist 23 may be formed in a direction orthogonal to the direction of the slit 21. Further, the joist 23 is preferably extended above the partition wall 25 that partitions the hollow portions 19 in order to increase the withstand load.

In the joist 23, the floor surface material 15 described above is used.
Is placed. The floor surface material 15 is screwed to the joist 23 with tapping screws 17. Therefore, the sound insulation floor panel 11 having the floor surface material 15 attached to the upper surface is
5 and the extrusion molded cement panel 13, between the joist 23
A void 27 is formed which is partitioned from each other. This void 2
7 communicates with the hollow portion 19 of the extrusion-molded cement panel 13 via the slit 21 described above.

That is, the hollow portion 19 and the slit 21 are
A resonator for absorbing sound, that is, a resonator for opening the hollow portion 19 in the gap 27, is configured. The resonator has a function of taking in sound from the slit 21 into the hollow portion 19 and attenuating sound energy by resonance.

The sound insulation floor panel 11 is a floor surface material 15
A shock absorbing material (for example, a rubber plate or the like) may be interposed between when fixing and fixing the to the joist 23. With such a structure, the impact propagating from the floor surface material 15 to the joist 23 can be alleviated.

The sound-insulating floor panel 11 thus constructed is
As shown in FIG. 3, for example, beams 31, 3 made of H-shaped steel material
Extruded cement panel 1 with both ends placed between each other
The bottom surface of both ends of 3 is fixed to the beam 31 by the clips 33 or the like to connect a plurality of sheets to form a floor portion.

Next, the sound insulation floor panel 1 thus constructed
1 will be described. When an object falls on the sound insulation floor panel 11 or a person jumps up, the impact at that time propagates through the floor surface material 15, and the lower surface of the floor surface material 15, that is, the void 27.
Generates an impact sound. The impact sound generated in the void 27 is
The light enters the hollow portion 19 through the slit 21 and resonates in the hollow portion 19 to be attenuated.

Therefore, in the sound-insulating floor panel 11, the impact sound due to jumping or the like does not directly propagate from the floor surface material to the extruded cement panel and propagate to the lower floor side. In addition,
In this sound insulation floor panel 11, not only the impact sound generated by the floor surface material 15 but also the sound transmitted to the floor surface material 15 through the hollow such as conversation is absorbed by the same action.

Next, the measurement result of the floor impact sound level of the sound insulation floor panel 11 will be described. FIG. 4 is an explanatory diagram showing a method of measuring the floor impact sound level. Floor impact sound level is JIS
Heavy impact sources (eg tires) specified in A1418
Is the measured value of the impact sound of each frequency band on the lower floor when is dropped on the floor.

As shown in FIG. 4, a pit 43 is formed in the concrete 41, the sound insulation floor panel 11 which is the object to be measured is placed on the upper opening of the pit 43, and the pit 43 has a predetermined height (for example, 60 cm to 90 cm). ), The tire 45 is allowed to fall freely, and the impact sound generated at that time is detected by the measuring device 47 installed in the pit 43.

The results obtained by such a measuring method are shown in FIG. In the figure, L-80 to L-50 are sound insulation grades, and the smaller the L value, the higher the sound insulation grade, that is, the sound insulation. In addition, the sound insulation grade is such that the floor impact sound level is 5 dB.
Each time it goes down, it goes up one rank. As is apparent from FIG. 5, the sound insulation floor panel 11 according to the conventional example (having the structure shown in FIG. 7) and the present embodiment has a grade of L-70. Compared to the floor panel of the conventional example, the panel 11 has approximately 2 to 3 d in each frequency band.
The floor impact sound level of B is lowered.

As described above, according to the sound insulation floor panel 11 described above, the hollow portion 1 formed in the extrusion molded cement panel 13 is used.
9 is opened by a slit 21, and a joist portion 23 is formed on the upper surface of the extrusion-molded cement panel 13, and a floor surface material 15 is attached to the joist portion 23, whereby the extrusion-molded cement panel 13 and the floor surface material 15 are Since the voids 27 are formed between them, the impact propagating from the floor surface material 15 is not affected by the void 2
It is possible to generate an impact sound in 7 and to absorb this impact sound in the hollow portion 19 to attenuate it. As a result, it is possible to significantly reduce the impact sound from the floor surface material 15 that has been difficult to be blocked by the conventional technology and propagates to the lower floor.

In the above embodiment, the joist 23
However, the joist portion 23 may be formed by another structure described below. Figure 6 shows various structures of the joist (A)
It is explanatory drawing shown by- (D). That is, the joist 51 is
As shown in FIG. 6 (A), a lightweight material 51a different from other parts may be simultaneously extrusion-molded. In the sound insulation floor panel 53 having the joist 51 as described above,
It is possible to improve the workability of the tapping screw 17 when the floor surface material 15 is attached.

As shown in FIG. 6 (B), the joist 55 is
It may be attached after the extrusion-molded cement panel 13 is molded. At this time, various materials such as an inorganic material, a wood material, a rubber material, and a resin material can be used as the material of the attached joist 55. According to the sound insulation floor panel 57 in which the pasted joist 55 is formed, the joist 55 of an arbitrary material can be pasted to the extrusion molded cement panel 13.
By attaching the joist 55 made of rubber material,
The impact propagating through the joist 55 can be reduced.

As shown in FIG. 6C, the joist 5
9 may be porous with minute pores.
According to the sound insulation floor panel 61 having the joist 59,
The workability of the tapping screw 17 at the time of construction can be improved.

Further, as shown in FIG. 6D, the joist 6
The member 3 may be filled with another member such as a resin material 65. According to the sound insulation floor panel 67 having the joist portion 63, it is possible to simultaneously improve the workability of the tapping screw 17 and reduce the impact transmitted through the joist portion 63.

[0024]

As described in detail above, according to the sound insulation floor panel of the present invention, the hollow portion formed in the molded cement panel is opened by the slit, and the joist portion is formed on the upper surface of the molded cement panel, By attaching a floor surface material to this joist, a void was formed between the molded cement panel and the floor surface material, so the impact propagating from the floor surface material is generated as an impact sound in the void, and this impact sound is hollow. It can be taken in and attenuated. As a result, it is possible to significantly reduce the impact sound to the lower floor side caused by the direct impact on the floor portion, and it is possible to improve the sound insulation of the floor portion.

[Brief description of drawings]

FIG. 1 is a perspective view showing a sound insulation floor panel according to the present invention.

FIG. 2 is an AA arrow view of the sound insulation floor panel shown in FIG.

FIG. 3 is a side view showing a state in which the sound insulation floor panel of FIG. 1 is attached and installed.

FIG. 4 is an explanatory diagram showing a method of measuring a floor impact sound level.

FIG. 5 is a graph showing measurement results of floor impact sound level.

FIG. 6 is an explanatory diagram showing various structures of a joist part in (A) to (D).

FIG. 7 is a front view showing a conventional floor panel.

[Explanation of symbols]

 11 Sound-insulating floor panel 13 Molded cement panel 15 Floor surface material 19 Hollow part 21 Slit 23 Joist part 27 Void

Claims (3)

[Claims] 1. A molded cement panel having a plurality of hollow portions inside, a slit formed on one surface of the molded cement panel for communicating the hollow portions with the outside, and one surface of the molded cement panel. A plurality of rib-shaped joist portions protruding from the floor, and a floor surface material that is fixed to the joist portions and forms a space sandwiched between the joist portions between one surface of the molded cement panel. A sound insulation floor panel characterized by that. 2. The sound insulation floor panel according to claim 1, wherein the joist portion is integrally formed with the molded cement panel by using the same material as that of the molded cement panel. 3. The sound insulation floor panel according to claim 1, wherein the joists formed of a material different from that of the molded cement panel are fixed to one surface of the molded cement panel.