JP2541446Y2 - Vibration damping mat - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention reduces the impact vibration applied to the floor of the building and keeps the neighbors and the lower floors calm. In addition, the floor has insulation and heat insulation functions.

[Conventional technology]

If a hardboard such as a wooden floor is used as a decorative board on the floor base, the floor impact noise on the floor immediately below will increase.In general, it is possible to reduce the noise by inserting a buffer board under the wooden floor. Is being done. Conventionally used as a buffer plate include a soft fiber plate, a soft rubber plate, a foamed resin plate, and a filament-entangled three-dimensional net-like plate, and furthermore, various irregularities are provided on the back surface of the buffer plate to promote a buffer effect. The intended one is also used.

However, in any case, when the wooden floor was placed, the improvement value of the impact noise applied to the floor surface downstairs often did not reach the planned value.

[Problems to be solved by the invention]

While continuing to study these situations, the inventor came to the following point.

That is, when the conventional shock-absorbing plate to which impact vibration is applied from the upper surface is well observed, a phenomenon in which the shock-absorbing plate used for the purpose of controlling the vibration itself runs.

This is a conventional shock-absorbing plate, except for a three-dimensional net-like plate, which is a solid internal type (Matsushibu). Even if air bubbles are mixed in the material or irregularities are installed on the back surface, the impact speed is high and the hard impact source is hard. In contrast, the phenomenon that occurs because the shock absorbing plate itself exhibits properties close to that of a solid material that is acoustically a good conductor of vibration. It has been found that this is due to the solid propagation and spread of impact vibration inside the buffer plate, which exceeds the buffer force of the plate.

[Means for solving the problem]

The present invention has been made to solve such a problem of the conventional shock absorbing plate and to further improve the improvement value of the floor impact noise.

That is, in the vibration damping mat A of the first aspect of the present invention,
In order to prevent the impact vibration from propagating and expanding inside the plate body, a mat type material such as a soft fiber plate or a soft rubber plate which easily propagates the vibration is avoided as a material for forming the mat. Then, using a heat-bonding fiber such as polypropylene, polyethylene, polyester or the like having a relatively high fineness of 5 denier or more alone or a mixture with another fiber, carding the fiber and forming a fibrous web (fluffy duvet). Forming
These are laminated in layers so that the upper and lower layers are not mixed, and are compression-heat-molded with little needle punching.

At this time, each fiber web forms almost one layer of the fiber thin film 1, and the single fibers in the fiber thin film 1 are almost randomly arranged in a plane, and are compression-heat-molded in a multi-layered state to form upper and lower layers. The fiber thin film 1 is bonded or heat-sealed at the contact point 2 which is the intersection of the single fibers, and the fibers of the upper and lower layers are connected without mixing as a whole and molded into a mat of a predetermined thickness.

When the wooden floor 6 is laid directly on the vibration damping mat A configured as described above, the joint portion of the wooden floor 6 depends on the type of floor when walking or loading. Was made to correct the drawbacks that make it easier to sink. That is, a resin film 3 made of polypropylene, polyethylene, or the like, in which a large number of circular holes, long holes, or slits 4 are cut so as to have an opening ratio of 30% or more, is adhered to the surface of the vibration damping mat A. Alternatively, the surface is reinforced by heat fusion so as to minimize vibration propagation.

A third aspect of the present invention is to provide a one-way or two-way mesh of a filament, string, or twisted resin wire 5 instead of the resin film 3 and to heat-seal the surface of the vibration damping mat A to make the surface smooth. Thus, the pressure resistance is further increased.

[Action]

The vibration damping mat according to the present invention is used by being mainly attached to the lower surface of a wooden floor and laid on a floor base 8 which is constructed smoothly.

In the vibration damping mat A of claim 1, the upper and lower layers are connected only by the contact 2 where the single fibers are stuck or heat-sealed, and the upper and lower layers are molded into a mat without mixing the fibers. The elasticity of the single fiber between them is maintained to maintain the cushioning performance, and the vibration isolation of the air layer interposed between the upper and lower fiber thin films 1 realizes the vibration isolation, and the buffering by the impact vibration from above is performed. Since the propagation of the vibration in the board can be prevented extremely well, the floor impact sound downstairs caused by the impact vibration on the wooden floor 6 placed on the vibration damping mat A can be reduced as planned. .

On the other hand, in the conventional fiber buffer plate, monofilaments are mixed and molded into a mat shape with a binder almost in a solid state, or most of the fibers are entangled and integrated by needle punching. Therefore, it has a vibration propagation characteristic acoustically close to that of a solid, and both the damping force and the improvement value of the impact noise are considerably inferior as described later.

The vibration damping mat B of the second aspect has a resin film 3 having perforations 4 adhered or heat-sealed to the surface to increase the pressure resistance without lowering the vibration damping performance. Now, when a resin film without perforations 4 is adhered, the resin film resonates by the action of a taut drum skin, and the vibration is easily propagated and expanded. Propagation and expansion of vibration due to the action are unlikely to occur. For this reason, the surface of the mat is reinforced without lowering the vibration damping performance, and the floor surface can be kept stable even when the thin wooden floor 6 is placed on the surface.

A third aspect of the present invention is a vibration damping mat C having a further increased pressure-resistant strength on the surface, wherein a one-way or two-way mesh such as a resin wire 5 having no planar spread is adhered or heat-sealed to the surface. Due to the reinforcement, almost no vibration propagation occurs in the vibration damping mat C, and only the pressure resistance can be increased. Therefore, it is possible to use a thinner wooden floor 6.

〔Example〕

 Embodiments will be described with reference to the drawings.

FIG. 1 is a partially enlarged cross-sectional view of a vibration damping mat A according to claim 1, wherein a fiber thin film 1 is made by carding a heat-adhesive composite fiber made of a polypropylene resin and a polyethylene resin having a single denier of 5 denier or more. Like forming the thin film 1, about ten layers are laminated so that the upper and lower layers are not mixed.
A state in which a vibration damping mat A having a thickness of 5 mm is formed by compression heat treatment is shown. In addition to this example, the heat-adhesive conjugate fiber is a heat-adhesive resin such as polypropylene, polyethylene, polyester, or polyamide, and the low-melting point resin is at least a part of the fiber surface among two types of resins having melting points different by at least about 20 ° C. There are fibers that are adapted to form In the present invention, it is also possible to use a mixture of a heat-adhesive fiber including a heat-adhesive conjugate fiber and a non-heat-adhesive fiber such as rayon, vinylon, acrylic, animal and plant fibers.

The thickness of the vibration damping mat A is 1 to 30 mm as a standard according to the required performance of the floor impact noise improvement value. In the manufacturing process, the fiber thin film 1 is formed by laminating the single fibers in a layer by the thickness of the mat, and as a result, even if the fiber thin films 1 are multiply laminated, the single fibers of the upper and lower layers are disturbed, If they are not mixed, the function and effect will not change, and the contacts 2 will be stuck or heat-sealed with such strength that they do not come off in normal use.

After cooling, the vibration-damping mat A processed and molded as described above can deliberately peel off the upper and lower layers in a deliberate manner by almost the number of layers. The fiber buffer plate, which can be separated only by tearing off the upper and lower layers, is a proof that the single fiber is molded as a mat in a mixed state, and shows a property acoustically close to a solid.

2 and 3 are overall perspective views of a vibration damping mat B according to claim 2, in which a resin film 3 having perforations 4 cut on its surface with an opening ratio of 30% or more is adhered or heat-sealed. FIG. Regardless of the shape of the perforations 4 such as a circular hole, a long hole or a slit groove, even if the resin film 3 is adhered to both surfaces, the vibration damping performance does not change.

4 and 5 are overall perspective views of the vibration damping mat C according to the third aspect, and show a state in which the resin wire 5 is heat-sealed on the surface so that the surface becomes smooth.

The resin wire 5 is a filament or twisted wire having a diameter of about 1 to 5 mm, and the string bar is a flat wire having a thickness of 0.1 to 3 mm and a width of 3 to 50 mm to form a one-way or two-way mesh. Is around 50-100 mm.

FIG. 6 is a detailed sectional view showing an embodiment of the vibration damping mat of the present invention. That is, the damping mats A, B, and C are provided on the back surface of the wooden floor 6 in advance according to the flooring width and thickness.
Is selected and affixed. This is tightly fitted in the fitting groove 10 and attached on the floor base 8. If the joist 7 is fixed around the lower edge of the wall base 9, the edge of the wall is strengthened. The damping mats A, B, and C and the wooden floor 6 may not be attached in advance, but may be separately constructed on site.

In the case of the embodiment of FIG. 6, the vibration damping mat B according to claim 2
When a flooring with a thickness of 5mm and a wooden floor 6 with a thickness of 12mm is laid on a reinforced concrete floor base 8 with a thickness of 150mm, the light weight floor impact sound insulation grade is L-50 as planned.
Could be obtained. When the conventional fiber cushioning plate was used, the light floor impact sound rating was only L-65 in the above configuration.

[Effect of the invention]

Since this effect is configured as described above, it has the following effects.

When the vibration damping mat A according to claim 1 is used, the impact excitation on the wooden floor placed on the surface is extremely effectively absorbed and attenuated by its excellent shock absorbing performance and vibration insulating performance, and Floor impact noise can be reduced as planned.

The vibration damping mats B and C according to Claims 2 and 3, in addition to the above-described effects, can use a wooden floor 6 having a narrow flooring width and a small thickness as the wooden floor 6 placed on the surface, and a resin film. 3 or the resin wire 5 makes it difficult for the adhesive to permeate into the mat from the surface, and can constitute a sound insulation floor that can be adapted to any wooden floor.

In addition, the wooden sound-insulating floors using the damping mats A, B, and C of the present invention are all made of a dry material, and are extremely thin and lightweight as a whole, so that they fit well and can be applied to small-scale construction and remodeling work. In addition, the stability of the floor surface when living, insulation,
It has become possible to easily supply a high-performance, sound-insulating wooden floor with heat insulation.

[Brief description of the drawings]

FIG. 1 is a partially enlarged sectional view of the first embodiment, FIG. 2 and FIG.
FIG. 4 is an overall perspective view of claim 2, FIGS. 4 and 5 are overall perspective views of claim 3, and FIG. 6 is a detailed sectional view showing an embodiment. Reference numerals in the figure are: 1 ... a fiber thin film, 2 ... a contact 3 ... a resin film, 4 ... a perforation 5 ... a resin wire, 6 ... a wooden floor 7 ... a joist, 8 ... a floor base 9 ... ... wall base, 10 ... fitting groove A, B, C ... vibration damping mat

Claims (3)

(57) [Scope of request for utility model registration] 1. A fiber thin film 1 is formed from a heat-adhesive fiber alone or a mixture with another fiber, and the fiber thin film 1 is laminated in layers so that upper and lower layers are not mixed. A vibration damping mat formed by sticking or heat fusing at the contact points 2 where the upper and lower layers intersect, and performing a compression heat treatment so as to be connected to each other. 2. The vibration damping mat according to claim 1, wherein a resin film 3 having a plurality of perforations 4 such as a large number of circular holes and slit grooves is adhered to the surface or both surfaces. 3. The vibration damping mat according to claim 1, wherein a filament, a string, or a twisted resin wire 5 is adhered to the surface after being juxtaposed.