JP2514282Y2 - Wooden soundproof floorboard - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] This device is mainly used for unevenness.
The present invention relates to a wooden soundproof floor board that can be constructed on a concrete floor slab .

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. Hei 2-282561 discloses a hard material.
Foam of rubber or plastic
Seat made of body, support plate made of plywood, etc., front and back
Elastic foam or fiber with irregularities formed on both sides
Body, porous fiberboard, rubber-like elastic body, etc.
Subsequent laminated floor finishes are disclosed.

[0003]

[Problems to be solved by the invention] However, in the above configuration
Construction of floor finishing material on uneven concrete slab
Then, the support plate made of veneer plywood is hard and flexible.
Since it is scarce, it is not enough to use the shock absorber laminated on the back side of the support plate.
Can not absorb irregularities completely, and joins floor finishing surfaces, especially floor materials
There was a problem that there was a step on the eyes. On the back of the support plate
Although it is described that a groove is formed, it is formed in the longitudinal direction.
This means that the floor finish does not bend in the
Unevenness on cleat floor slabs cannot be absorbed.

The problem is that a damping sheet made of rubber or synthetic resin is attached to the lower surface of the wooden decorative board with an adhesive, and the lower surface of the damping sheet is attached with an adhesive to the back surface in the lateral direction. a plurality of wood board cut grooves are formed is stuck, the unevenness on both surfaces on the lower surface of the wood substrate is formed foamed synthetic resin sheet is adhered to the wooden soundproof floor smell
The unevenness formed on both sides of the foamed synthetic resin sheet.
Non-tuned, each has a different shape and is in contact with a wooden substrate
The height of the convex portion of the surface is lower than the height of the convex portion of the surface in contact with the floor base.
It is solved by a wooden soundproof floor board characterized by being formed .

Wood decorative boards include plywood, particle board,
The substrate is MDF, LVL, etc., and the surface has a thickness of 0.
A commonly used thin decorative veneer of about 2 to 0.5 mm was attached.
A veneered veneer with a total thickness of 2.0 to 5.0 mm is generally used.

The vibration damping sheet is made of rubber or synthetic resin,
Those having a hardness in the range of 10 to 40 degrees and a thickness of 0.5 to 2.0 mm as measured by the C-type hardness meter specified in JIS K 6301 have a damping effect despite having a vibration damping effect.
It is preferably used because the amount of penetration is relatively small .

The same wooden board as the wooden decorative board
Used, the kerf is formed to give flexibility to the entire floorboard and to make the floor slab surface better fit.
With a depth of 3 to 7 mm parallel to the lateral direction of the back surface.
It is formed at regular intervals of about 1 to 10 cm . In addition, construction
In order to improve the property, the peripheral part is joined with real fruit etc.
It is.

The foamed synthetic resin sheet has a foaming ratio of 10 to 10.
A sheet material made of polyethylene, urethane, etc. having a thickness of 50 to 50 times and a thickness of 4 to 20 mm is compressed to a thickness of 3 to 6
mm and the shape of the front and back sides are different
Not tuned, and the height of the convex portion of the surface in contact with the wooden substrate is
The height is lower than the height of the convex part of the surface that contacts the floor floor slab surface.
Those molded irregularities to formed is used. In particular,
It is preferable that the depressions have a relatively small amount of depression so that the contact area ratio with the wood substrate is 50 to 80% and the contact area ratio with the concrete floor slab surface is in the range of 35 to 70%.

The adhesive is a rubber type or urethane resin,
A synthetic resin adhesive such as acrylic resin, vinyl resin, melamine resin, or phenol resin is used.

According to this invention, since a plurality of kerfs are formed in the lateral direction of the back surface of the wooden board, flexibility is imparted to the hard wooden board, and even on a concrete floor slab having many irregularities. Flexible adhesion and foamed synthetic resin
The unevenness formed on both sides of the oil sheet is out of sync and its shape
The floor height is different, and the height of the convex part of the surface that contacts the wooden substrate is different.
Since it is formed lower than the height of the convex portion of the surface that contacts
The amount of subduction when a load is applied from the floor surface is reduced
While feeling the hardness of, the soundproofing effect is improved.

[0012]

EXAMPLE As shown in FIG . 1, a plywood sheet having a thickness of 2.5 mm was prepared.
Total thickness of 0.3 mm thick veneer stuck on the surface 2.
8mm wood decorative board 1, 1mm thick synthetic resin sheet
2. Cut 1.5mm wide kerf 4 on the back side at 5cm intervals
The formed wooden board 3 made of plywood with a thickness of 7 mm has a thickness of
400 mm / m2 (density 0.0
About 5) urethane foam sheet is heat pressed from both sides with template
Then, a square convex part with a thickness of 4 mm and a circle with a thickness of 1 mm
-Shaped recess and the contact area ratio with the wooden substrate 3 is 70%,
The contact area ratio with the floor surface of the slab is 45%.
The foam synthetic resin sheet 5 was adhered and integrated in order to obtain a desired wood-based soundproof floorboard.

As a comparative example, in the configuration described above,
Cleat floor slab surface only has unevenness and contact area ratio is 4
Wooden soundproof floorboard using 5% urethane foam sheet
(Comparative Example 1) and the foamed synthetic resin sheet on the bottom surface of 400
Flat urethane foam sheet with a thickness of 4.5 mm at g / m2
A wood-based soundproof floorboard (Comparative Example 2) using was prepared .

Then, these wood-based soundproof floorboards have a thickness of 1
Constructed on a 50 mm concrete floor slab with adhesive, add a light weight floor impact sound individually from the top with a tapping machine, and measure the noise for each frequency using a sound level meter on the bottom of the concrete floor slab , The sound insulation class (L) value and the subduction amount were calculated by adding 80 kg / 50 mm , which is a load assuming the area and weight of the human heel to the surface of the wooden soundproof floorboard.

As shown in FIG. 3 and FIG. 4, the sound insulation class (L) value passes 50 for the lightweight floor impact sound, and the amount of depression is kept relatively low to improve the sound insulation performance. The result was obtained. In addition, concrete before construction
There was some unevenness on the floor slab surface, but after the construction
There is no separate float or step at the seam.
The raised surface was formed smoothly.

According to this invention, since a plurality of kerfs are formed in the lateral direction of the back surface of the wooden board, flexibility is imparted to the hard wooden board, and even on a concrete floor slab with many irregularities. Since it adheres flexibly, between the floor boards after construction
There is no step at the seam. Also, before installation,
Smooth the unevenness of the concrete floor slab with a liner.
The work to be done can be omitted and the construction can be reduced. Also,
The unevenness formed on both sides of the foamed synthetic resin sheet is not synchronized
Convex part of the surface that has a different shape and is in contact with the wooden board
Make the height lower than the height of the convex part of the surface that contacts the floor base
As a result, the amount of subsidence when a load is applied from the floor is reduced.
You can feel the hardness of the floor a little while improving the soundproofing effect.

[Brief description of drawings]

FIG. 1 is a side view of a wooden soundproof floor board according to an embodiment of the present invention.

FIG. 2 is an example of front and back surfaces of a foamed synthetic resin sheet used for the wood soundproof floorboard of the present invention.

[Fig. 3] Sound insulation class test results.

FIG. 4 is a result of a subduction amount test.

[Explanation of symbols]

 1 Wood Decorative Board 2 Vibration Suppression Sheet 3 Wood Substrate 4 Slit 5 Foam Synthetic Resin Sheet

Claims (1)

(57) [Scope of utility model registration request] 1. A vibration damping sheet made of rubber or synthetic resin is attached to the lower surface of a wooden decorative board with an adhesive, and a plurality of vibration damping sheets are attached to the lower surface of the vibration damping sheet in the lateral direction of the back surface with the adhesive. In the wood-based soundproof floorboard, in which a wood substrate having a kerf formed therein is adhered, and a foamed synthetic resin sheet having irregularities on the front and back surfaces is adhered to the lower surface of the wood substrate.
The concavities and convexities formed on both sides of the resin sheet are non-synchronous and their shapes are
The height of the convex part of the surface that is different and is in contact with the wooden board is under the floor
A wooden soundproof floorboard characterized by being formed lower than the height of the convex portion of the surface in contact with the ground .