JP5041689B2 - Floor structure - Google Patents

Description

The present invention relates to a floor structure .

In the floor structure configured as shown in Patent Documents 1 and 2 below, concave grooves are provided in the corners of the male upper surface, and the floor plate is fixed by driving nails into the concave grooves.
Japanese Utility Model Publication No. 2-39042 Japanese Patent Application Laid-Open No. 11-152885

Proper driving of nails into the concave grooves in the corners of the upper surface of the male body requires skill, and inadvertently driving the nails will damage the corners of the male body and deform the corners. In some cases, this could interfere with actual mating.

Further, driving the nail pushes up the surface side portion of the floor board located above the corner, which may impair the flatness of the floor surface and lower the walking feeling.

Therefore, the problem to be solved by the present invention is to provide a floor structure having a novel configuration that can surely perform actual fitting and maintain the flatness of the floor surface well even by nailing. There is.

In order to achieve the above object, the present invention according to claim 1 has a substrate configuration in which a single-plate laminate composed of a plurality of single plates is laminated and adhered to the back side of a fiberboard disposed on the outermost surface side. provided notches enters from the base end of Omi upper surface of the substrate main body direction, the cutout is formed in the thickness range of the outermost surface veneer of laminated veneer board, outermost surface single thereabove A state in which the floor plate, which is formed so that the plate remains, and whose opening height is 1 to 3 mm and depth is 1 to 3 mm, exposes the nail head in the notch at the proximal end of the male upper surface The floor structure is characterized in that the female fruit is fitted without the nailing head pushing up the surface of the floor board .

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As the substrate of the floor board used in the floor structure according to the present invention, a substrate having a board structure in which a fiber board is arranged on the front surface side and a single board laminated plate formed by bonding a plurality of single plates on the back surface side is used.

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Here, the single plate laminate includes so-called plywood. The plywood is formed by stacking odd number of single plates so that the fiber directions of adjacent single plates are orthogonal to each other, and can be used as odd ply plywood such as 3 ply, 5 ply, and 7 ply. . The outermost surface side single plate and the outermost surface side single plate are arranged so as to substantially coincide with the longitudinal direction of the composite plate. Each veneer forming the plywood may be a softwood veneer or a hardwood veneer, or a plywood in which these are arbitrarily combined.

In addition, as a single plate laminate, four or more single plates are laminated and bonded, and the fiber direction of the single plate on the outermost surface side and the single plate on the back surface side are made to coincide with the longitudinal direction of the floor plate, You may use what made the lamination | stacking direction of the several single plate located between an outermost surface side single plate and an outermost back side single plate correspond to the transversal direction of a floor board. Also in this veneer laminate, each veneer may be a softwood veneer or a hardwood veneer, and any combination thereof may be used.

MDF (medium density fiberboard), HB (hardboard), etc. can be used for the fiberboard, but from the viewpoint of suppressing shrinkage expansion and deterioration due to moisture content change over a long period after construction, it is a dry process. It is preferred to use the MDF produced.

As the adhesive interposed between the single plates in the single plate laminated plate or between the single plate laminated plate and the fiber plate, it is preferable to use a thermosetting adhesive with less formaldehyde emission, urea resin, phenol resin, melamine It is preferable to use one or more types arbitrarily selected from resins, urethane resins or their modified resin adhesives, isocyanate adhesives, synthetic rubber adhesives, and the like.

Notch entering from the proximal end of the male real upper surface of the floor plate to the substrate main body direction are formed. The cross-sectional shape of the notch may be an appropriate shape such as a U shape, a modified U shape whose opening side width is larger than the back side width, or a wedge shape (or V shape). The size of the notch is an opening height of 1 to 3 mm and a depth of 1 to 3 mm . The notch is formed within the thickness range of the outermost single plate of the single plate laminate in the substrate having a laminated configuration in which the single plate laminate is bonded and laminated on the back side of the fiberboard.

The floor board having such a structure is fixed to the floor base by driving nails into the base line of the male upper surface, that is, the intersection line between the male upper surface and the extended surface of the male body side end surface. The nail driving angle is 45 to 50 degrees with respect to the substrate body side (horizontal plane). The size of the nail to be used is, for example, a trunk diameter of 2 mm, a head diameter of 3.5 mm, and a length from the head to the trunk tip of 38 mm. A spiral groove is formed in the body of the nail.

When laying the floor board on the floor substrate through actual fitting, the end surfaces of the actual upper substrate body are brought into contact with each other, but the end surfaces of the actual lower substrate body are not brought into contact with each other. It is preferable to perform the construction so as to give a slight gap between them.

According to the first aspect of the present invention, since the notch that enters the substrate body direction from the base end of the male top surface of the floor board is formed, when the floor board is nail-fixed to the floor base, the nail is male. Even if the bottom surface of the notch swells by being obliquely driven toward the substrate main body at the base end of the actual upper surface, it is absorbed in the notch and the flatness of the floor board is not impaired.

In addition, the nails are not driven into the concave grooves as in the prior art, but the nails head is driven with the base end of the upper surface of the male body fully exposed, causing damage and deformation on the base end side of the male body. Therefore, there is no hindrance to actual fitting.

Further, since the notch is formed within the thickness range of the outermost single plate of the single plate laminate, the nail is driven into the relatively soft single plate laminate, and the nail can be driven easily. Further, there is almost no damage caused by bending or slipping of the nail when nailing, so that the nail can be surely performed. Furthermore, since the swell of the lower surface of the notch due to nailing is absorbed by the notch, it can be utilized as it is without impairing the flatness of the fiberboard used on the outermost surface side of the substrate.

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FIG. 1 is a sectional view showing a floor board used in a floor structure according to an embodiment of the present invention, and FIG. 2 is a sectional view showing the floor structure . In the floor board 12 according to this embodiment, a composite board in which a single board laminated board 14 composed of a plurality of single boards 14a to 14d is arranged on the back side of the MDF 13 arranged on the surface side is a substrate 15, and a decorative sheet 16 is provided on the surface thereof. It is affixed. The fiber direction of the outermost surface side single plate 14a and the outermost back surface side single plate 14d in the single plate laminate 14 coincides with the longitudinal direction of the floor plate 12 (direction perpendicular to the short direction X), and the single unit disposed between them. The fiber directions of the plates 14b and 14c coincide with the short direction X of the floor plate 12. As the thickness of the MDF 13 and each of the single plates 14a to 14d, one having an appropriate thickness can be selected from a range of 1.5 to 5 mm, for example. As an example, the thickness of the outermost surface side single plate 14a is 2.55 mm, the thickness of the outermost surface side single plate 14d is 1.95 mm, and the thicknesses of the single plates 14b and 14c arranged therebetween are 2. 00 mm and 2.55 mm. Between each single plate 14a-14d, and the single plate 14a and MDF13 are stuck using the thermosetting adhesive with few divergence of formaldehyde, for example, a modified phenol resin adhesive. Even if the composite plate having such a structure is hot-press molded by one shot, the shrinkage after the hot-pressure decompression is sufficiently suppressed in both the longitudinal direction and the transverse direction X. Since warpage and downward warping do not occur, it is suitable for use as a floor board substrate. The size of the floor board 12 is, for example, a thickness T = 12 mm and a width W = 303 mm.

A male fruit 17 is formed on the two adjacent sides of the four peripheral edges of the floor plate 12, and a female fruit 18 for fitting the male fruit 17 is formed on the other two sides. The male 17 is formed within a thickness range from the outermost surface single plate 14a to the third single plate 14c of the single plate laminated plate 14, and the base end 17b (the male upper surface 17a and the male upper surface 17a of the upper surface 17a). A notch 19 is formed so as to enter the direction of the substrate body from a point of intersection with the lower extension surface of the actual upper end surface 20a. The notch 19 of this embodiment has an irregular U-shaped cross-sectional shape with an opening height of about 1.6 mm, a back side height of about 0.5 mm, and a depth (depth) of about 2 mm. The lower surface is located within the thickness range of the outermost single plate 14a of the single plate laminated plate 14. A chamfered portion 18 a is formed at the upper protruding corner of the female fruit 18. Reference numeral 20a denotes a male upper end face, reference numeral 20b denotes a male lower end face, reference numeral 21a denotes a female upper end face, and reference numeral 21b denotes a female lower end face.

After this floor board 12 is arranged on the floor base 22 through the fitting of the male fruit 17 and the female fruit 18, the nail 23 is 45 to 50 degrees with respect to the horizontal plane in the direction of the substrate body at the position of the male upper surface base end 17b. The floor board 12 is fixed by driving diagonally at an angle of. The nail 23 to be used is the same as described above . Although the head of the nail 23 is exposed on the base end 17 b, the nail 23 is accommodated in a space (not indicated by a chamfered portion 18 a formed in the upper protruding corner of the female fruit 18, and in the notch 19. The flatness of the MDF 13 is maintained without pushing up.

When the floor plates 12 and 12 are connected to each other through actual fitting, these actual upper end surfaces 20a (which are inclined surfaces gradually retreating downward) and 21a (except for the chamfered portion). The vertical surfaces are in contact with each other, but the actual lower end surfaces 20b and 21b are not in contact with each other, and a gap 24 is formed between them. It is possible to avoid a decrease in gait and a decrease in aesthetics due to the gap by closely matching without generating a gap.

FIG. 3 is a sectional view showing a floor board used in a floor structure according to another embodiment of the present invention, and FIG. 4 is a sectional view showing the floor structure . The floor board 25 according to this embodiment uses a composite board in which a three-ply plywood 27 made of three single boards 27a to 27c is arranged on the back side of an MDF 26 arranged on the surface side as a substrate 28, and a decorative sheet 29 on the surface thereof. Is pasted. The fiber direction of the front single plate 27 a and the back single plate 27 c in the plywood 27 coincides with the longitudinal direction of the floor plate 25, and the fiber direction of the intermediate single plate 27 b arranged therebetween coincides with the short direction X of the floor plate 25. ing. The thickness of the MDF 26 and each single plate 27a to 27c is appropriately selected within a range of 1.5 to 5 mm, for example, but the intermediate single plate 27b is thicker than the front and back single plates 27a and 27c. The thickness is about 5 mm. Between each single board 27a-27c, and the single board 27a and MDF26 are stuck using the thermosetting adhesive with little emission of formaldehyde, for example, a modified phenol resin adhesive. As described above with reference to the embodiment shown in FIG. 1 and FIG. 2, the composite plate having such a configuration has a shrinkage in the longitudinal direction and a short direction after hot-pressure decompression, even when hot-press molding is performed with one shot. Since it is sufficiently suppressed in any of the hand directions X and does not substantially warp and warp, it is suitable for use as a floor board. The size of the floor board 25 is, for example, a thickness T = 12 mm and a width W = 303 mm.

A male fruit 30 is formed on two adjacent sides of the four peripheral edges of the floor plate 25, and a female fruit 31 that fits the male fruit 30 is formed on the other two sides. The male 30 is formed within a thickness range from the surface single plate 27a to the intermediate single plate 27b of the plywood 27, and the base end 30b of the upper surface 30a (the lower extension surface of the male upper surface 30a and the male upper end surface 33a). A notch 32 is formed to enter the direction of the substrate body from the intersection line point). The notch 32 in this embodiment is a U-shaped horizontal groove having an opening height of about 1 mm and a depth of about 2 mm, and its lower surface is located within the thickness range of the surface single plate 27 a of the plywood 27. ing.

After this floor board 25 is disposed on the floor base 35 through the fitting of the male fruit 30 and the female fruit 31, the nails 36 are positioned at the position of the male upper surface base end 30b toward the board body and 45 to 50 with respect to the horizontal plane. The floor board 25 is fixed by driving obliquely at an angle of degrees. The nail 36 used is the same as that already described . Although the head of the nail 36 is exposed on the base end 30 b, the nail 36 is accommodated in a space (not indicated) by the chamfered portion 31 a formed at the upper protruding corner of the female seed 31 and the notch 32, so that the surface of the floor plate 25 Is maintained, and the flatness of the MDF 26 is maintained.

Also in this embodiment, when the floor plates 25 and 25 are connected to each other through actual fitting, the actual upper vertical end surfaces 33a and 34a come into contact with each other, but the actual lower end surfaces 33b and 34b. They are not in contact with each other, and a gap 37 is formed between them, and in the same manner as in the above-described embodiment, the upper side is closely abutted without causing a gap between the left and right floorboards, A decrease in aesthetics due to the gap can be avoided.

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Other configurations and operations in this embodiment are the same as those in the above-described embodiment, and thus are omitted.

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It is sectional drawing which shows the floor board used for the floor structure by one Embodiment of this invention. It is sectional drawing which shows the floor structure using the floor board of FIG. It is sectional drawing which shows the floor board used for the floor structure by another embodiment of this invention. It is sectional drawing which shows the floor structure using the floor board of FIG.

12,25 floor board
17, 30 male fruit
18,31 female
19, 32 notches
13,26 MDF (fiberboard)
14 Single plate laminate
27 plywood (single laminated board)

Claims (1)

It has a substrate structure in which a single-plate laminate consisting of a plurality of single plates is laminated and adhered to the back side of the fiberboard arranged on the outermost surface side, and a notch that enters the substrate body direction from the base end of the male upper surface is provided The notch is formed within the thickness range of the outermost surface single plate of the single plate laminate, and is formed so that the outermost surface single plate remains above, and the height of the opening is A floor board with a depth of 1 to 3 mm and a depth of 1 to 3 mm is fixed by nailing with the nail head exposed in a notch at the base end of the male upper surface, so that the nail head does not push up the surface of the floor board. Floor structure characterized by mating fruit .

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