JP2590228Y2 - Flooring material - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor covering material laid on a floor such as a concrete slab.

[0002]

2. Description of the Related Art (Conventional Example 1) As a base material for a floor laid on a floor surface such as a concrete slab, for example, a groove having a square cross section is provided in a base material body of a synthetic resin foam, and a nailing property is formed in the groove. Known is a structure in which a good crosspiece is fitted flush with the upper surface of the base material main body, and at the time of fitting, an adhesive is applied in advance to the bottom face of the crosspiece and the bottom face of the groove or the like. Bonding.

[0003] The adhesive used at this time is usually an emulsion adhesive, which requires a considerable amount of time to exhibit adhesive strength. Therefore, after the crosspiece is fitted, pressure is applied from above the crosspiece. Or, the width of the groove is formed smaller than the width of the crosspiece, and the crosspiece is fixed by using a method of forcibly pushing the crosspiece and relying on the tightening stress of the base material main body.

[0004] However, in the case of the floor base material having this structure, if the dimensional accuracy of the width of the groove and the width of the crosspiece varies, the tightening stress does not function sufficiently and uneven bonding strength occurs, The width may be too large and the product may warp. For this reason, there is a problem that the yield as a product is deteriorated.

(Conventional Example 2) A floor covering material proposed to solve such a problem has a structure shown in FIGS.
No. 46583).

This floor base material is composed of a base material main body 11 and a crosspiece 13 fitted in a groove 12 (FIG. 9) provided on the upper surface side. As shown in FIG. 9, the groove 12 has a fitting groove 12 a at a lower end portion on the inner side surface thereof.
Is provided with a flange 13a fitted to the fitting groove 12a at the lower end of the side surface. The crosspiece 13 is aligned with the flange 13a and the fitting groove 12a so that the groove 1
2 is inserted from the side.

The base material body 11 is made of a synthetic resin foam molded from polystyrene beads or the like, and the crosspiece 13 is made of wood or a low foam synthetic resin material (such as polystyrene). In addition, 14 is a groove for piping, 15 is a ventilation groove, and 16 is a joint portion.

Since the floor base material of Conventional Example 2 has the above-described structure, the problem of Warping of Conventional Example 1 does not occur.

[0009]

However, the floor base material of Conventional Example 2 has the following problems.

(1) The fitting groove 12a of the groove 12 cannot be formed at the same time when the base material body 11 is formed. That is, first, a base material body having a groove having a square cross section must be formed, and then the bottom of the groove must be cut with a cutter to form fitting grooves 12a on both sides. For this reason, the processing accuracy deteriorates, and the bottom surface of the processed groove 12 is inclined, and the positions of the right and left fitting grooves 12a are shifted in the vertical direction. For this reason, it may be difficult to fit the beam 13 into the groove 12.

[0011] Even if the fitting is successful, a step is formed between the upper surface of the base material main body 11 and the upper surface of the crosspiece 13, and floor noise tends to occur.

(2) In order to firmly fix the crosspiece 13 to the base material body 11, it is desirable to use an adhesive. However, since the crosspiece 13 is configured to be inserted into the groove 12 from the side, even if the groove 12 is coated with an adhesive, it is pushed out by the crosspiece 13. Therefore, the adhesive cannot be used effectively.

This invention has been made to solve the problems of the conventional example 2 while taking advantage of the above-mentioned conventional example 1. (1) The crosspiece can be fixed to the groove of the base material main body. (2) There is no risk of warping of the base material body due to fitting of the crosspiece into the groove, and (3) a floor base material capable of easily fitting the crosspiece into the groove. With the goal.

[0014]

According to the present invention, there is provided a floor base material provided with a base material body made of synthetic resin foam provided with a groove having a rectangular cross section, and convex portions on both sides fitted in the groove. A floor material comprising a cross section having a rectangular cross section, wherein the protrusion is provided at least 5 mm below the upper surface of the cross section, and a rising angle θ of the lower end from the side surface is 0 ° <θ. <90
° As will be, or together with the cross-sectional shape is formed so as rounded, the effective width of the crosspieces W _S1, W _S2 the maximum width of the crosspieces, when the effective width of the groove was set to W _f1 Are set so as to satisfy the following relational expressions: W _S1 + 1 ≦ W _S2 ≦ W _S1 +3 (mm) W _f1 + 1 ≦ W _S2 ≦ W _f1 +3 (mm)

The reason why W _S1 , W _S2, and W _f1 are set so as to satisfy the above relational expression is that if W _S1 +1> W _S2 or W _f1 +1> W _S2 , the crosspiece comes off the groove. Easier,
This is because if W _S2 > W _S1 +3 or W _S2 > W _f1 +3, the base material body is warped.

When the position of the convex portion is 5 mm or more lower than the upper surface of the crosspiece, when the position is less than 5 mm, the W _S1 and W _{S2 are set.}
And also W _f1 is a case of satisfying the above relationship, because the crosspieces are sometimes prone disengaged from the groove. In addition, the position of the protrusion refers to the position of the upper end of the protrusion from the upper surface (level). In addition, the effective width W _S1 of the crosspiece is determined on the upper surface of the crosspiece,
The cross-sectional shape excluding the convex portion of the crosspiece is not necessarily rectangular, and it is sufficient that the difference between the upper surface and the protruding portion is within 1 mm.

The rising angle θ of the projection is 0 ° <θ <90 °
In addition, the reason why at least the lower end of the convex portion is rounded is that the convex portion does not catch on the inner surface of the groove at the time of fitting into the groove of the beam, so that the groove of the beam is This is for facilitating fitting to the device. More preferably, 0 ° <θ ≦ 40
°.

The crosspiece is made of wood, a low foam synthetic resin material, or the like.

[0019]

In the present invention, the dimensional relationship between the crosspiece and the groove of the base material body to which the crosspiece is fitted is set so as to satisfy the above relational expression, and the position and shape of the convex portion of the crosspiece are set as described above. With this setting, the crosspiece can be fitted by pushing it into the groove from above.

Once fitted, the projections bite into the inner surface of the groove so that the crosspiece does not come off the groove. In addition, even if the protrusions bite, there is no possibility that the base material main body will be warped.

Since the crosspiece can be pushed into the groove from above as described above and fitted, even if an adhesive is previously applied to the bottom surface of the crosspiece or the bottom surface of the groove at the time of fitting, There is no risk that the adhesive will be pushed out by the crosspiece when fitted. Therefore, the adhesive can be effectively used for fixing the crosspiece and the base material main body.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

First, two grooves 2 (FIG. 4) are formed at an interval of 450 mm on the upper surface side using polystyrene beads as a raw material.
A base material main body 1 made of a polystyrene foam having a thickness of 50 mm, a width of 600 mm, and a length of 900 mm (expansion ratio: 40) was formed.

As shown in FIG. 4, the groove 2 has a quadrangular longitudinal section, an effective width W _f1 of 40 mm, and a depth D of 20 mm.
And

On the other hand, as a crosspiece 6 fitted into the groove 2, FIG.
As shown in (1), one provided with convex portions 6a on both side surfaces was prepared. As shown in FIG. 4, the crosspiece 6 has a rectangular longitudinal section, an effective width W _S1 of 40 mm, and a maximum width (convex portion 6a).
Part width) _WS2 is 43mm, thickness T is 20mm, length is 60
0 mm. A low polystyrene foam material (expansion ratio: 2) was used as the crosspiece.

The protruding portions 6a are provided continuously in the longitudinal direction of the crosspiece 6, and as shown in FIG. 4, the vertical cross-sectional shape is a right triangle, the width T ₂ is 4 mm, and the height H is 1.5 mm. The rising angle θ of the lower end from the side of the crosspiece was 30 °. Also, the protrusion 6a
, Ie, the distance T ₁ from the upper and lower surfaces of the crosspiece 6,
T ₃ was 8mm.

Next, the crosspiece 6 was pressed down and fitted into the groove 2 of the base material body 1 with a press, with the rising surface side of the protruding portion 6a facing down, while supporting the groove 2 of the base material body 1 so as not to be shifted laterally. The fitting was easily performed by applying a load of 100 kg and holding for about 5 seconds. FIGS. 1 and 2 show a floor base material obtained by fitting the crosspiece 6 in this manner.

When the fitting state of the crosspiece 6 was confirmed, FIG.
It was like. That is, at the time of fitting, the inner side surface of the groove 2 is crushed by the convex portion 6a and slightly widens.
It was restored to almost the original shape, and the state in which the convex portion 6a bites into the inner surface of the groove 2 could be confirmed.

As a precautionary measure, when a floor material was nailed and stuck to the beam 6 and an attempt was made to peel the floor material from the floor material, it was difficult to peel the beam 6 from the ground material body 1. .

When the presence or absence of warpage of the base material body 1 after the fitting was confirmed, no warpage was observed.

In the above embodiment, the case where the crosspiece 6 is fitted into the groove 2 of the base material main body 1 to form the floor base material has been described. However, when the crosspiece 6 is fitted, as shown in FIG. As described above, the adhesive 7 may be applied to the bottom of the groove 2 in advance.

In this way, the fixing of the crosspiece 6 becomes stronger. This is because the adhesive 7 applied at the time of fitting the crosspiece 6 into the groove 2 is not pushed out of the groove 2 by the crosspiece 6 and is effectively utilized.

Further, in the above embodiment, the vertical cross-sectional shape of the convex portion 6a is a right-angled triangle.
As shown in FIG. 6, a trapezoid (FIG. 6 (a)), an isosceles triangle (FIG. 6 (b), (c)), a semicircle (FIG. 6 (d),
(E)), a low chevron (FIG. (F)).

Further, the convex portion 6a in the above embodiment is
Although provided continuously in the longitudinal direction of the crosspiece 6, it may be provided discontinuously.

[0035]

As described above, according to the floor base material of the present invention, since the above-described structure is employed, the following effects are obtained.

(1) The crosspiece can be fixed to the groove of the base material main body.

(2) The warp does not occur in the base material main body due to the fitting of the crosspiece into the groove.

(3) The crosspiece can be easily fitted into the groove.

[Brief description of the drawings]

FIG. 1 is a plan view of a floor base material according to an embodiment.

FIG. 2 is a side view of an underfloor material of the embodiment.

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is a side view showing the dimensional relationship between the groove of the base material main body and the crosspiece in FIG. 3;

5 is a side view showing an application procedure when applying an adhesive to the groove of the base material main body in FIG. 3;

FIG. 6 is a side view showing another aspect of the projection provided on the crosspiece.

FIG. 7 is a plan view of a conventional floor base material.

FIG. 8 is a side view of a conventional floor base material.

9 is a side view showing the base material main body and the crosspiece in FIG. 8 separated from each other.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base material main body 2 Groove 6 Crosspiece 6a Convex part 7 Adhesive

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04F 15/02 E04F 15/00 601

Claims (1)

(57) [Scope of request for utility model registration] 1. A floor base material comprising a base material body made of a synthetic resin foam provided with a groove having a square cross section, and a crosspiece having a square cross section having convex portions on both sides fitted into the groove. The convex portion is provided at least 5 mm below the upper surface of the crosspiece, and a rising angle θ from the side surface of the lower end portion is 0 ° <θ.
<90 ° or a round cross section, and the effective width of the crosspiece is W
_S1, W _S2 the maximum width of the crosspieces, when the effective width of the groove was set to W _f1, relationship each of the following formula _{W S1 + 1 ≦ W S2 ≦} W S1 +3 (mm) W f1 + 1 ≦ W S2 ≦ W f1 +3 (mm). A floor base material characterized in that it is set to satisfy +3 (mm).