JP5314985B2 - Floor sheet for level difference and its attachment structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor sheet for a step, and a sticking structure of the floor sheet excelling in workability and stickable while being bent along roundness so as not to form a clearance at a recessed groove forming part regardless of the size of the roundness formed at the corner of a stepped part of floor backing. <P>SOLUTION: The floor sheet 10 for the step is formed by forming a plurality of recessed grooves 2a, 2b parallel with the end side 1a of one end side at constant spaces on the back face on the one end side of the floor sheet having rectangular plane shape, and enlarging the groove width of one or more recessed grooves 2a from the one closer to the end side 1b on the other end side of the floor sheet, out of these recessed grooves, in comparison with the groove width of the other recessed grooves 2b. The sticking structure is structured to position the recessed groove 2a closest to the end side on the other end side of the floor sheet, to a roundness starting end of the corner of the stepped part of the floor backing and to stick the recessed groove forming part 2 of the floor sheet while bending it along the roundness of the corner. The floor sheet can be stuck also to small roundness of the corner by bending the part formed with the wide recessed groove 2a at a small radius of curvature. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a step floor sheet that is attached to a step portion of a floor base such as a balcony, a veranda, or a terrace.

  Waterproofing such as waterproof painting or waterproof sheeting is applied to the floor base of apartment balconies. However, the waterproofing process may be damaged or worn by friction during walking, and the waterproofing process is easily damaged or worn particularly at the corners of the stepped portion of the floor base. Therefore, measures such as attaching a protective sheet to the stepped portion of the floor base to prevent damage or abrasion of the waterproofing treatment of the stepped portion are taken.

As a specific example of such measures, a strip-like floor sheet mainly composed of a thermoplastic synthetic resin and / or rubber, which is parallel to the long side of the strip at least on the front surface or / and the back surface thereof. Use a sheet with a plurality of cutout grooves provided at predetermined intervals. Bend the floor sheet downward at the cutout groove and stick it to the stepped portion of the floor, such as a balcony or veranda. The technique which performs is known (patent document 1).
JP 2008-88651 A

  Since the floor sheet of Patent Document 1 has a plurality of cutout grooves, when pasting on the stepped portion of the floor base, the portion where the cutout groove is formed is the corner of the stepped portion. It can be easily bent along the line. However, since all the notch grooves are formed with the same narrow groove width, if the corner radius of the stepped portion is small, the floor sheet can be bent with a small curvature radius along this small radius. Not only is this difficult and workability deteriorates, but a gap is created between the notch groove formation part and the corner of the floor sheet, and stress concentrates on the notch groove formation part during walking, making the notch with low strength. There was a risk of cracks and breakage in the groove forming portion.

  Further, when the floor sheet of Patent Document 1 is attached to the stepped portion of the floor base, if a part of the notched groove forming portion having a weak strength overlaps the upper step surface of the stepped portion, the pedestrian's stepping pressure is reduced. There is also a risk that the notch groove forming portion directly acts on a part of the notch groove forming portion, and the notch groove forming portion is cracked or broken in a relatively short period of time.

The present invention has been made under the circumstances described above, and the problem to be solved is to form a concave groove along the rounded corner, regardless of whether the rounded corner formed in the stepped portion of the floor base is large or small. An object of the present invention is to provide a floor sheet for a step having good workability that can be attached while bending a portion so that no gap is generated.
Another problem to be solved is to provide a structure for attaching a floor sheet for a level difference in which a groove forming portion of the level difference floor sheet is not subjected to a stepping pressure to cause a crack or breakage.

In order to solve the above problems, the floor sheet for a step according to the present invention is
A floor sheet for a step formed by forming a plurality of concave grooves parallel to an edge of the one end side on a back surface of one end side of a floor sheet having a rectangular planar shape, and having a plurality of concave grooves, Of these, the groove width of one or more concave grooves from the side closer to the edge on the other end side of the floor sheet is made wider than the groove width of the other groove grooves , and the edge on the other end side of the floor sheet is the largest. The groove width of the closest groove is the largest, and the groove width is narrower toward the groove closer to the edge on one end side .

  The step floor sheet sticking structure according to the present invention covers the step floor sheet from the upper step surface of the step portion formed on the floor base to the step surface through the corner where R is formed. Adhering structure, and positioning the groove closest to the other end of the floor sheet among the plurality of grooves in the floor sheet at the rounded start end of the corner connected to the upper surface of the step. Then, the grooved portion of the floor sheet is overlapped while being bent along the radius of the corner of the stepped portion, and the sheet portion on the other end side and the sheet portion on the one end side of the grooved portion of the floor sheet are overlapped. The floor sheet is stuck on the upper and step surfaces of the step portion.

Since the floor sheet for a level difference of the present invention has a plurality of concave grooves parallel to the edge of the one end side of the floor sheet having one end side of the floor sheet having a rectangular planar shape at a constant interval, When affixed to the step portion of the ground, the groove forming portion can be adhered while being bent along the radius of the corner of the step portion so that a gap is not substantially formed. And the floor sheet for level | step differences of this invention is the groove width of one or more recessed grooves from the side close | similar to the edge of the other end side of a floor sheet among several recessed grooves. The groove width of the groove closest to the edge on the other end side of the floor sheet is widened, and the groove width closer to the edge on the edge of the floor sheet is made narrower. When the groove forming portion is bent, the radius of curvature of the portion where the groove having a large groove width is formed is smaller than the radius of curvature of the portion where the other groove is formed. Therefore, when the radius of the corner of the step portion is small, the portion where the groove having a wide groove is formed can be attached along the radius of the corner with a small radius of curvature. As described above, the step floor sheet of the present invention has good workability because it can be adhered while bending the groove forming portion along the radius, even if the corner radius of the step portion is large or small. Also, since there is no gap between the concave groove forming part and the corner, it is possible to eliminate the concern that stress concentrates on the concave groove forming part during walking, as in the case where a gap occurs, and cracks and breakage occur. it can.

  Further, like the stepped floor sheet sticking structure of the present invention, among the plurality of recessed grooves of the stepped floor sheet, the groove closest to the end on the other end side of the floor sheet is formed on the stepped portion of the floor foundation. Position at the corner start edge of the corner connected to the upper surface, and stack the grooved portion of the floor sheet along the radius of the corner of the stepped portion, and overlap the grooved portion of the floor sheet with the other end. When the floor sheet is pasted with the sheet part on one end side and the sheet part on one end side, and the floor sheet is pasted, the weak groove formation part does not overlap the upper step surface of the step part. It becomes difficult for the stepping pressure to directly act on the concave groove forming portion, and it is possible to eliminate the fear that the concave groove forming portion is cracked or damaged by the stepping pressure. And since the portion where the groove having a wide groove that can be bent with a small radius of curvature overlaps with the corner radius, the groove is not only when the corner radius is large, but also when the radius is small. The formed portion can be laminated and adhered with no gap while being bent along the radius.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view of a floor sheet for a level difference according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the floor sheet for the level difference, and FIG. FIG. 4 is an explanatory view of the shape of the concave groove of the floor sheet for level difference, and FIGS. 5 and 6 are explanatory views of the bonding structure of the floor sheet for level difference according to the present invention. The case where the floor sheet for level | step differences was affixed on the level | step difference part with a large round is shown, and FIG. 6 has shown the case where the floor sheet | seat for level | step differences is affixed on the level | step difference part with a small round of the corner of a floor base.

  As shown in FIG. 1, the step floor sheet 10 is a floor sheet having a rectangular planar shape, and is made of a soft synthetic resin or synthetic rubber that is easily bent. For example, a soft vinyl chloride resin, A floor sheet containing an olefin-based resin as a main component and a filler, various additives, a colorant and the like is preferable. This floor sheet 10 may be a single-layer sheet or a laminated sheet of two or more layers. In the case of a laminated sheet, dimensional stability is achieved by interposing a nonwoven fabric or woven fabric such as glass fiber, carbon fiber, or synthetic resin fiber as an intermediate layer. And tear resistance may be improved.

  As shown in FIG. 2, a plurality of concave grooves 2 a and 2 b parallel to the long end side 1 a on one end side are formed on the back surface on one end side in the width direction (right end side in FIG. 2) of the rectangular floor sheet 10. It is formed over the entire length of the floor sheet at regular intervals. Then, on the surface of the sheet portion 3 on the other end side (the left end side in FIG. 2) from the recessed groove forming portion 2, a plurality of anti-slip ridges parallel to the end side 1b on the other end side of the floor sheet 10 are provided. 3a and concave 3b are alternately formed over the entire length of the floor sheet. Further, a concave step portion 4a for applying a caulking agent for preventing the edge from rolling up is formed on the edge surface of the sheet portion 4 on the one end side over the entire length of the floor sheet. A double-sided pressure-sensitive adhesive tape 5 is attached to the back surface of the sheet portion 4 on the side. As the double-sided pressure-sensitive adhesive tape 5, a double-sided pressure-sensitive adhesive tape using an acrylic pressure-sensitive adhesive having high water resistance and heat aging resistance is preferably used. Since the force is strong, as will be described later, one end side of the sheet portion 4 on one end side of the floor sheet 10 is not peeled off from the step surface of the step portion of the floor foundation by the restoring force of the bent groove forming portion 2. There is an advantage that the sheet portion 4 can be firmly adhered to the step surface.

  As shown in FIGS. 2 and 3, the above-mentioned concave grooves 2 a and 2 b are small concave grooves having an inverted V-shaped cross-sectional shape, and the other end side of the floor sheet 10 among these concave grooves 2 a and 2 b. As for the two concave grooves 2a and 2a from the side closer to the end side 1b, the groove width Wa and the opening angle θa are larger than the groove width Wb and the opening angle θb of the other concave grooves 2b. Therefore, when the concave groove forming portion 2 of the floor sheet 10 is bent toward the back side, the radius of curvature of the portion where the concave groove 2a having a large groove width is formed is set to the curvature of the portion where the other concave groove 2b having a narrow groove width is formed. It can be made smaller than the radius.

  Since this level difference floor sheet 10 is formed with a plurality of concave grooves 2a, 2b as described above, as shown in FIG. 5, as shown in FIG. Ten concave groove forming portions 2 are aligned with the rounded corners 22a of the corner 22 of the stepped portion, and the portion having the wide groove 2a and the portion having the narrow groove 2b are bent at the same radius of curvature. However, in the case where the corner radius is small, as shown in FIG. 6, the portion where the groove 2a having a wide groove width is formed is a small radius at the corner 22. It can stick along 22a, bending at a curvature radius smaller than the part which formed the ditch | groove 2b with a narrow groove | channel width. Therefore, the floor sheet 10 for level difference has good workability, and since a gap is not easily formed between the recessed groove forming portion 2 and the corner 22, the stress is generated when walking as in the case where a gap is generated. It is also possible to eliminate the fear that cracks and breakage will occur by concentrating on the 10 recessed groove forming portions 2.

  If the concave grooves 2a and 2b are grooves having an inverted V-shaped cross section as described above, stress tends to concentrate on the acute groove bottom, causing damage or breakage. Therefore, the grooves of the concave grooves 2a and 2b The bottom is formed on a concave surface 2c having a roundness as shown in FIG. 4 (a), a cylindrical surface 2d having an open lower end as shown in FIG. 4 (b), or a horizontal surface as shown in FIG. It is preferable to reduce the stress concentration.

  The thickness T of the step floor sheet 10 is preferably 1.0 to 3.0 mm (preferably 1.5 to 2.0 mm). In this case, the depth D of the grooves 2a and 2b is 0.5. It is good to set it as -2.0 mm (preferably 0.5-1.0 mm). That is, it is preferable to set the depth D so that the thickness from the groove bottoms of the recessed grooves 2a and 2b to the surface of the recessed groove forming portion 2 of the floor sheet 10 is 0.5 to 1.0 mm. If the concave grooves 2a and 2b are deeper than the above, the thickness of the concave groove forming portion 2 may be too thin, which may cause cracks or breakage during walking. On the other hand, if the concave grooves 2a and 2b are shallower than the above, Therefore, it is difficult to bend the concave groove forming portion 2 along the round 22a 22a.

  The groove width Wa of the wide concave groove 2a is preferably 0.5 to 1.0 mm (preferably 0.6 to 0.7 mm), and the groove width Wb of the narrow concave groove 2b is 0. .1 to 0.4 mm (preferably 0.2 to 0.3 mm). If the groove width Wa of the wide concave groove 2a is smaller than 0.5 mm, when the concave groove forming portion 2 of the floor sheet 10 is bent, the degree of freedom of the radius of curvature of the portion where the concave groove 2a is formed becomes low. If the groove width Wb of the narrow groove 2b is smaller than 0.1 mm, it may be impossible to bend along the radius of the corner having a radius of 3 mm or less. Since the degree of freedom of the radius of curvature is further lowered, there is a possibility that it cannot be bent along a corner radius of about 10 mm in radius. On the other hand, when the groove width Wa of the wide concave groove 2a is larger than 1.0 mm and the groove width Wb of the narrow concave groove 2b is larger than 0.4 mm, a concave groove forming portion is formed along the radius 22a of the corner 22. 2 is bent, a relatively large gap remains between the side surfaces of each of the concave grooves 2a and 2b, so that sufficient strength cannot be obtained, and there is a risk that the concave groove forming portion 2 may be cracked or damaged during walking. Is appropriate.

  Note that the opening angles θa and θb of the concave grooves 2a and 2b are in the range of 5 to 100 ° (preferably 8 to 20 °), and the inverted V shape having the depth D and the groove widths Wa and Wb described above. What is necessary is just to determine suitably so that a ditch | groove may be formed.

  The width of the recessed groove forming portion 2 of the floor sheet 10 is such that the radius 22a of the corner 22 of the step portion of the floor base is at most about 10 mm in radius, and usually about 2 to 5 mm in radius. It is desirable to set to about 8-20 mm so that it can do. Then, a total of about 8 to 30 is formed on the back surface of the concave groove forming portion 2 with the pitch P of 0.5 to 2.0 mm (preferably 0.8 to 1.0 mm). It is desirable. Forming the concave grooves 2a and 2b with such a pitch P is advantageous because the concave groove forming portion 2 can be easily bent along the corner radius of about 2 to 10 mm in radius.

In the floor sheet 10 of this embodiment, two concave grooves 2a having a wide groove width are formed from the side closer to the end side 1b on the other end side, but are not limited to two, and one or more It only has to be formed. However, since the wide concave groove 2a is necessary for bending the concave groove forming portion 2 along the small radius of the stepped portion, it does not need to be formed so much, and at most about four. It is sufficient to form (less than half of the total number of grooves). Although not shown, the groove width of the groove 2a closest to the edge on the other end side of the floor sheet 10 is widened, and the groove width is gradually reduced toward the groove closer to the edge on the one end side. as such, it is preferable to configured such stepwise changing the groove width.

  The step floor sheet 10 having the above-described configuration is manufactured, for example, by molding the above-described material resin composition by a known molding method such as extrusion molding, inlaid molding, press molding, or injection molding. However, the concave grooves 2a and 2b on the back surface of the concave groove forming portion 2 and the non-slip convex stripes 3a and 3b are formed by reversing the concave grooves 2a and 2b by heating and softening the floor sheet after molding. You may make it form by means, such as pressing the inversion type | mold of the protruding item | line 3a and the recessed item | line 3b, or cutting. In this embodiment, the double-sided pressure-sensitive adhesive tape 5 is attached to the back surface of the sheet portion 4 on one end side, but instead of this double-sided pressure-sensitive adhesive tape, a single-layer pressure-sensitive adhesive tape or a liquid pressure-sensitive adhesive may be used. Needless to say. In addition, what is necessary is just to stick these adhesive bodies on the back surface of the sheet | seat part 4 of the one end side after shaping | molding of a sheet | seat. The range in which the pressure-sensitive adhesive is formed may be substantially the entire back surface of the sheet portion 4 on one end side as in the present embodiment, or may be a part thereof.

  Next, with reference to FIG. 5 and FIG. 6, the sticking structure of the floor sheet for level | step differences of this invention is demonstrated.

  The sticking structure of the present invention is obtained by sticking the stepped floor sheet 10 to a stepped portion of the floor base 20, for example, a stepped portion at the tip of a veranda base. Waterproofing treatment (not shown) such as urethane coating waterproofing, asphalt waterproofing, and waterproof sheet coating is applied. And the sheet | seat part 3 of the other end side of the floor sheet 10 for level | step differences is piled up on the upper stage surface 21 of the level | step-difference part of the floor foundation | substrate 20, and the floor 22a (R side | surface) of the corner 22 connected to the upper stage surface 21 is a floor. The concave groove forming portion 2 of the sheet 10 is bent and overlapped along the rounded radius 22a, and the sheet portion 4 on one end side of the floor sheet 10 is superimposed on the stepped surface 23 that continues downward from the rounded corner 22a. . The other end side sheet portion 3 and the groove forming portion 2 of the floor sheet 10 are formed on the upper surface of the stepped portion with a curable adhesive such as urethane, epoxy, or silicon, a rubber adhesive, or an adhesive tape. 21 and the round 22a of the corner 22 are each stuck, and the one end side sheet | seat part 4 of the floor sheet 10 is stuck to the level | step difference surface 23 with the above-mentioned double-sided adhesive tape 5. FIG.

  As shown in FIGS. 5 and 6, the recessed groove forming portion 2 of the floor sheet 10 has a stepped difference in the large groove 2 a (leftmost recessed groove) having the largest groove width closest to the end side 1 b on the other end side of the floor sheet 10. It is positioned at the rounded start end portion 22b of the corner 22 of the portion, and is adhered while being bent along the rounded portion 22a (the rounded surface) of the corner 22. That is, when the radius 22a of the corner 22 is large, for example, with a radius of 5 mm, as shown in FIG. 5, the concave groove 2a at the left end of the concave groove forming portion 2 is positioned at the radius start end portion 22b of the corner 22, and the groove width is wide. The part where the concave groove 2a is formed and the part where the concave groove 2b where the groove width is narrow are bent along the radius 22a with the same radius of curvature, and are stuck so as not to produce a substantial gap. When the radius 22a is as small as 2 mm, for example, as shown in FIG. 6, the groove 2a at the left end of the groove forming portion 2 is positioned at the rounded start end 22b of the corner 22 to form the groove 2a having a wide groove width. While the portion is bent with a smaller radius of curvature than the portion where the concave groove 2b having a narrow groove width is formed, the portion is stuck along the round 22a so that no gap is substantially formed.

  As described above, when the concave groove 2a at the left end is positioned at the round start end 22b of the corner 22 and the concave groove forming portion 2 is adhered to the round 22a of the corner 22, the concave groove forming portion 2 is formed on the upper surface 21 of the stepped portion. Since they do not overlap, it becomes difficult for the pedestrian's stepping pressure to act directly on the concave groove forming portion 2 having a low strength, and the fear that the concave groove forming portion 2 is cracked or damaged by the stepping pressure can be solved. Further, since a gap is unlikely to be formed between the recessed groove forming portion 2 and the corner 22, stress is concentrated on the recessed groove forming portion 2 of the floor sheet 10 and cracks and breakage occur during walking as in the case where the clearance is generated. Anxiety can be resolved.

  In the bonding structure of this embodiment, a synthetic resin floor sheet 30 is bonded to the upper surface 21 and the lower surface 24 of the floor 20 with the adhesive, and is applied to the edge surface of the sheet portion 4 on one end side. A caulking process 40 is applied from the formed recessed step portion 4a to the step surface 23 of the step portion to prevent the edge from rolling up. Further, a caulking agent 41 is packed in the gap between the floor sheet 30 and the step floor sheet 10 and the gap between the floor sheet 30 and the step surface 23.

It is a perspective view of the floor sheet for level | step differences which concerns on one Embodiment of this invention. It is a cross-sectional view of the floor sheet for steps. It is explanatory drawing about the dimension of the ditch | groove of the floor sheet for the same level | step difference. It is explanatory drawing about the shape of the ditch | groove of the floor sheet for level | step differences. It is explanatory drawing of the bonding structure of the floor sheet for level | step differences which concerns on this invention, Comprising: The case where the floor sheet for level | step differences is bonded to the level | step-difference part with a large round of the corner of a floor base is shown. It is explanatory drawing of the sticking structure of the floor sheet for level | step differences which concerns on this invention, Comprising: The case where the floor sheet for level | step differences is stuck to the level | step-difference part where the radius of the corner of a floor base is small is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a The edge of the one end side of a floor sheet 1b The edge of the other end side of a floor sheet 2 A groove forming part 2a A groove having a large groove width 2b A groove having a narrow groove width 3 A sheet part on the other end side of the floor sheet 4 Floor Sheet portion on one end side of sheet 5 Double-sided adhesive tape 10 Floor sheet for step 20 Floor base 21 Upper step surface of step portion 22 Corner of step portion 22a Corner radius 22b Earl end portion 23 Step difference surface

Claims (2)

A floor sheet for a step formed by forming a plurality of concave grooves parallel to the edge of the one end side on the back surface of the one end side of the floor sheet having a rectangular planar shape, with a certain interval,
About one or more concave grooves from the side closer to the edge of the other end side of the floor sheet among the plurality of concave grooves, the groove width is made wider than the groove width of the other concave grooves , and the other end of the floor sheet A floor sheet for a level difference characterized in that the groove width of the groove closest to the side edge is widest, and the groove width is narrower toward the groove closer to the edge on one side . It is a structure in which the floor sheet for a step according to claim 1 is attached so as to cover the step surface from the upper step surface of the step portion formed on the floor base to the step surface through the corner where the round is formed,
Of the plurality of concave grooves of the floor sheet, the concave groove closest to the edge on the other end side of the floor sheet is positioned at the rounded end of the corner connected to the upper surface of the stepped portion, and the concave of the floor sheet is positioned. The groove forming portion is overlapped while being bent along the rounded corners of the stepped portion, and the sheet portion on the other end side and the sheet portion on the one end side from the recessed groove forming portion of the floor sheet are connected to the upper step surface of the stepped portion. A bonding structure of a floor sheet for a level difference, wherein the floor sheet is bonded to the level difference surface.

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