Impact absorption floor material

Abstract

To provide an impact absorption floor material capable of greatly suppressing deterioration of appearance at a boundary between a panel material and a slope material.SOLUTION: A shock absorption floor material 10 comprises: a panel material 11 laid on a floor surface F to absorb shocks; a slope material 12 made of a resin material and having an upper surface 12a inclined so as to connect an upper surface 11a of the panel material 11 and the floor surface F; and a sheet-shaped floor lifting material 14 provided so as to cover the upper surface 11a of the panel material 11 and the upper surface 12a of the slope material 12, and it comprises a communication material 13 made of an elastic body interposed between the panel material 11 and the slope material 12 so as to communicate between the upper surface 11a of the panel material 11 and the upper surface 12a of the slope material 12.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an impact absorbing floor material. [Background technology]

[0002] At present, falls and fractures among the elderly have become a social problem, and fall fractures account for 10% of the reasons why elderly people become dependent on care. The location of fractures caused by falls varies greatly depending on age, and the risk of femoral fractures increases sharply after the age of 60. Femoral fractures require hospitalization for treatment and can lead to a prolonged inability to walk, which can easily lead to a bedridden state or dementia or other conditions requiring care. For this reason, for example, the following Patent Documents 1 and 2 propose shock-absorbing flooring materials that reduce the risk of fractures by absorbing the impact of falls. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-071225 A [Patent Document 2] JP 2021-143504 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, shock-absorbing floor materials are usually installed by laying panels on the floor surface, and therefore, depending on the thickness of the panel material, there is a tendency for the panel material to interfere with steps between the floor surface and structures such as doors, and therefore, inclined slope materials are often installed at the boundary portions of the panel materials. In consideration of safety when walking and ease of wheelchair movement, foamed bodies made of resins such as polyethylene are generally used as such slope materials, and the slope is set to be as small as possible. Therefore, when an excessive load is applied to the boundary portion between the panel material and the slope material, the amount of compressive deformation of the slope material is larger than that of the panel material, and therefore the edge of the boundary portion of the panel material is easily damaged, and the appearance is easily deteriorated.

[0005] In view of the above, an object of the present invention is to provide an impact absorbing floor material that can significantly prevent deterioration of the appearance of the boundary between the panel material and the slope material. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the shock-absorbing flooring material of the present invention comprises a panel material that is laid on a floor surface to absorb shock, a slope material made of a resin material that is laid on the floor surface and has an inclined upper surface so as to connect the upper surface of the panel material to the floor surface, and a sheet-shaped flooring material that is arranged to cover the upper surface of the panel material and the upper surface of the slope material, and is characterized in that it comprises a connecting material made of an elastic body that is interposed between the panel material and the slope material to connect the upper surface of the panel material and the upper surface of the slope material.

[0007] In the shock absorbing floor material according to the present invention, it is preferable that the interconnecting material is made of a rubber material.

[0008] In addition, in the impact absorbing floor material according to the present invention, it is preferable that the Shore A hardness of the connecting material in the above-mentioned impact absorbing floor material is 30 or more and 90 or less. In particular, it is more preferable that the Shore A hardness of the connecting material is 40 or more and 80 or less.

[0009] Furthermore, in the impact absorbing floor material according to the present invention, it is preferable that the slope material is made of a foamed resin material.

[0010] Moreover, in the impact absorbing floor material according to the present invention, it is preferable that the Shore A hardness of the slope material in the above-mentioned impact absorbing floor material is 30 or more and 70 or less.

[0011] Furthermore, it is preferable that the impact absorbing floor material of the present invention, in the above-mentioned impact absorbing floor material, comprises a floor underlay material made of a soft resin material provided on the floor surface side, and an intermediate material provided on the floor top material side and harder than the floor underlay material.

[0012] In the impact absorbing floor material according to the present invention, it is preferable that the floor underlayment in the above-mentioned impact absorbing floor material is made of a foamed resin material.

[0013] In the impact absorbing floor material according to the present invention, it is preferable that the Asker C hardness of the floor underlayment in the above-mentioned impact absorbing floor material is 20 or more and 60 or less.

[0014] Furthermore, in the impact absorbing floor material according to the present invention, in the above-mentioned impact absorbing floor material, it is preferable that the intermediate material is made of a resin material containing 30% by mass or more and 85% by mass or less of an inorganic filler. Effect of the Invention

[0015] With the impact absorbing floor material of the present invention, even if the amount of compressive deformation of the slope material in the vertical direction is large relative to the amount of compressive deformation of the panel material, the connecting material can be compressively deformed so as to mitigate the difference in the amounts of compressive deformation. This significantly reduces the load applied to the ends of the panel material and greatly suppresses damage to the ends of the panel material, thereby significantly suppressing deterioration of the appearance of the boundary between the panel material and the slope material. [Brief description of the drawings]

[0016] [Figure 1] 1 is a cross-sectional view showing a schematic configuration of a main embodiment of an impact-absorbing floor material according to the present invention. [Diagram 2] FIG. 3 is a plan view seen from the direction of the arrow II in FIG. 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] The following describes an embodiment of the impact absorbing floor material according to the present invention with reference to the drawings. Note that the present invention is not limited to the following embodiment described with reference to the drawings, and various technical matters described in the embodiment can be appropriately combined, replaced, or omitted as necessary.

[0018] [Main embodiment] A main embodiment of the impact absorbing floor material according to the present invention will be described with reference to Figs.

[0019] Overall structure As shown in Fig. 1, a shock-absorbing panel material 11 is laid on a floor surface F. In addition, a slope material 12 made of a resin material with an inclined upper surface 12a is laid on the floor surface F adjacent to the panel material 11 so as to connect an upper surface 11a of the panel material 11 with the floor surface F. The slope material 12 has an upper surface 12a inclined so that the side closest to the panel material 11 has a height Hs equal to the height Hp of the panel material 11 (Hp = Hs), and the side furthest from the panel material 11 is approximately equal to the floor surface F.

[0020] At the boundary between the panel material 11 and the slope material 12, a connecting material 13 made of an elastic body that connects the upper surface 11a of the panel material 11 and the upper surface 12a of the slope material 12 is interposed so as to abut the panel material 11 and the slope material 12. The connecting material 13 has a height Hc equal to the height Hp of the panel material 11 and the height Hs of the slope material 12 (Hc=Hp=Hs). A flexible sheet-shaped floor material 14 is laid on the upper surface 11a of the panel material 11, the upper surface 12a of the slope material 12, and the upper surface 13a of the connecting material 13. This floor material 14 is also laid continuously on the floor surface F.

[0021] In the impact absorbing floor material 10 according to this embodiment, the thickness is preferably more than 7 mm and not more than 25 mm. If it is more than 7 mm, it is preferable because it is easier to balance the impact absorption, walking feeling, and durability. If it is not more than 25 mm, it is preferable because it is possible to reduce the step with the non-installed part and improve the fit when installed.

[0022] <Floor Underlayment 11A> The floor underlay material 11A is disposed on the floor surface F side of the panel material 11 in order to absorb pressure and cushion the impact by deforming when the user falls. The floor underlay material 11A is preferably formed of a soft thermoplastic resin material such as polyolefins such as polyethylene and polypropylene, polyvinyl chloride, ethylene-vinyl acetate copolymer, polystyrene, polyurethane, etc. The floor underlay material 11A is preferably a foamed resin material having a foam structure such as closed or continuous foam formed by chemical foaming, physical foaming, supercritical foaming, etc.

[0023] The floor underlayment material 11A preferably has an Asker C hardness of 20 or more and 60 or less. If the Asker C hardness is less than 20, it is not preferable because it is easily deformed, which may cause discomfort when walking, or may cause pedestrians to lose their balance, resulting in a decrease in safety. If the Asker C hardness is more than 60, it is not preferable because it may not be able to fully exhibit shock absorbing performance when a shock is applied.

[0024] "Asker C hardness" refers to the value measured using an Asker C hardness tester. The Asker C hardness tester is a hardness measuring instrument specified in the Society of Rubber Industry of Japan standard "SRIS 0101" and is a type of durometer (spring type hardness tester).

[0025] The floor underlayment 11A preferably has a thickness of 4 mm to 15 mm. If it is less than 4 mm, it is not preferable because it may not provide sufficient cushioning when a fall occurs. If it is more than 15 mm, it is not preferable because it may cause excessive deformation due to the load, resulting in a decrease in load-bearing capacity, and it may also cause a large sinking during walking, which may increase the risk of falling.

[0026] <Intermediate material 11B> The intermediate material 11B is disposed on the over-floor material 14 side of the panel material 11 in order to disperse the load applied from the over-floor material 14 to the under-floor material 11A as a support layer and improve shock absorption and load resistance. The intermediate material 11B is made of a resin base material containing a resin material and an inorganic filler, and is harder than the under-floor material 11A.

[0027] Examples of the resin material include various polyolefins such as polyethylene and polypropylene, polyvinyl chloride, polycarbonate, polyethylene terephthalate, polymethyl methacrylate, ABS resin, various polyamides, etc. Among these, polyolefins and polyvinyl chloride are preferred because of their versatility, mechanical properties, and thermal expansion properties, and polyvinyl chloride is particularly preferred.

[0028] The inorganic filler is contained in the intermediate material 11B to provide the mechanical properties and thermal expansion properties required for shock absorption. Examples of the inorganic filler include silica, talc, calcium carbonate, barium sulfate, aluminum hydroxide, carbon fiber, and glass fiber. Among them, calcium carbonate is preferable because of its versatility and processability. The content of the inorganic filler is preferably 30% by mass or more and 85% by mass or less, and more preferably 50% by mass or more and 85% by mass or less, based on the total mass of the intermediate material 11B.

[0029] The thickness of the intermediate material 11B is preferably 2 mm or more and 8 mm or less. If it is less than 2 mm, it is not preferable because the deflection during a fall is too large, making it difficult to obtain a sufficient cushioning effect, and there is a risk of damage when an impact is applied. If it exceeds 8 mm, it is not preferable because the mass is too large, making it difficult to sufficiently distribute the load when an impact is applied, making it difficult to obtain a sufficient cushioning effect, and there is also a risk of causing a deterioration in workability during construction.

[0030] <Slope material 12> The slope materials 12 are disposed adjacent to the panel material 11 in order to cushion the step that occurs between the construction and non-construction parts of the panel material 11. The slope material 12 is recommended to have a gradient of 1 / 12 or less as a measure for ensuring the safety of elderly people and others when moving, as stipulated in the Building Standards Act. Examples of resin materials for such low-gradient slope materials 12 that are generally available include foamed resin materials made by foaming polyethylene or the like. It is preferable for the slope material 12 to have a Shore A hardness of 30 or more and 70 or less, since this allows it to exhibit the right amount of shock cushioning on the slope.

[0031] <Contact Material 13> The connecting material 13 is made of an elastic body disposed between the panel material 11 and the slope material 12 so as to abut against the panel material 11 and the slope material 12 in order to reduce the difference in the amount of compressive deformation when an impact is applied between the panel material 11 and the slope material 12. Examples of this elastic body include rubber materials such as natural rubber, urethane rubber, nitrile rubber, chloroprene rubber, ethylene rubber, butyl rubber, fluororubber, and silicone rubber.

[0032] It is preferable that the connecting material 13 has a Shore A hardness of 30 or more and 90 or less (especially 40 or more and 80 or less) since this makes it easier to prevent damage to the end of the panel material 11. It is preferable that the connecting material 13 has a distance between the end of the panel material 11 and the end of the slope material 12 of 10 mm or more. If the distance is less than 10 mm, there is a risk that damage to the end of the panel material 11 cannot be sufficiently prevented.

[0033] <Floor material 14> The floor covering material 14 is arranged on the surface so as to cover the panel material 11, the slope material 12, and the connecting material 13 in order to impart surface functions such as scratch resistance, stain resistance, and design. Examples of the floor covering material 14 include commonly used materials such as long vinyl chloride sheets and vinyl chloride tiles. The floor covering material 14 is laminated by being adhered to the panel material 11, the slope material 12, and the connecting material 13 with adhesive tape, adhesive, or the like.

[0034] The floor covering material 14 preferably has a thickness of 5 mm or less. If the thickness is 5 mm or less, the weight increase can be suppressed, and the burden during construction can be reduced, which is preferable.

[0035] <Effects of the shock absorbing floor material 10> In the shock absorbing floor material 10 according to this embodiment, a connecting material 13 is interposed between the panel material 11 and the slope material 12. Therefore, for example, when a relatively heavy food delivery cart (mainly 200 to 400 kg) passes through the boundary between the panel material 11 and the slope material 12, the amount of compressive deformation of the slope material 12 is large compared to the amount of compressive deformation of the panel material 11 in the vertical direction, but the connecting material 13 compresses and deforms so as to reduce the difference in the amount of compressive deformation. This makes it possible to greatly reduce the load applied to the end of the panel material 11, and therefore to greatly suppress damage to the end of the panel material 11.

[0036] Therefore, according to the impact absorbing floor material 10 of this embodiment, deterioration of the appearance of the boundary portion between the panel material 11 and the slope material 12 can be significantly suppressed, and a decrease in impact absorption properties can also be suppressed. EXAMPLES

[0037] Examples carried out to confirm the effects of the impact-absorbing floor material according to the present invention will be described in detail below, but the present invention is not limited to the following examples.

[0038] [Preparation of test specimens and comparison specimens] Test specimen 1 First, a floor underlayment material of the following conditions and an intermediate material of the following conditions are prepared. Then, the floor underlayment material and the intermediate material are laminated, bonded with a two-liquid curing urethane adhesive, and cut to obtain a panel material of the following size. Next, a flat-plate-shaped connecting material of the following conditions and a slope material of the following conditions are prepared. Then, the panel material, connecting material, and slope material are bonded to a substrate of the following conditions that replaces the floor surface with an adhesive "US Cement (product name)" manufactured by Toli Co., Ltd. Next, a sheet-shaped floor overlay material of the following conditions is prepared and bonded to the upper surfaces of the panel material, connecting material, and slope material with the above adhesive. In this way, a shock-absorbing floor material test specimen 1 was produced.

[0039] "conditions" Underfloor / material: Polyethylene foam Asker C hardness: 45 Thickness: 6mm Intermediate material / material: Rigid polyvinyl chloride resin containing calcium carbonate Charcoal content ratio: 75% by mass Thickness: 4mm Panel material / size: 600mm x 300mm x thickness 10mm Contact material: urethane rubber Shore A hardness: 90 Size: 600mm x 20mm x 10mm thick Ramp material: Rigid polyethylene foam Shore A hardness: 30 Size: 600mm x 250mm x maximum thickness 10mm Gradient: 1 / 12 Substrate / Material: Calcium silicate Size: 600mm x 600mm x 12mm thick Flooring / Material: PVC resin Size: 600mm x 600mm x 2mm thick

[0040] Test specimen 2 Test specimen 2 of the impact absorbing floor material was produced under the same conditions as test specimen 1, except that the connecting material had a Shore A hardness of 80.

[0041] Test specimen 3 Test specimen 3 of the impact absorbing floor material was produced under the same conditions as test specimen 1, except that the connecting material had a Shore A hardness of 75.

[0042] Test specimen 4 Test specimen 4 of the impact absorbing floor material was produced under the same conditions as test specimen 1, except that the connecting material had a Shore A hardness of 50.

[0043] Test specimen 5 Test specimen 5 of the impact absorbing floor material was produced under the same conditions as test specimen 1, except that the connecting material had a Shore A hardness of 40.

[0044] Test specimen 6 Test specimen 6 of the impact absorbing floor material was produced under the same conditions as test specimen 1, except that the connecting material had a Shore A hardness of 30.

[0045] Comparison body 1 Comparative impact absorbing floor material 1 was produced under the same conditions as in Example 1, except that the connecting material was omitted and the panel material and the slope material were arranged adjacent to each other so as to be directly connected.

[0046] [Test Method] Caster Test After performing caster tests under the following conditions for specimens 1 to 6 and comparative specimen 1, the load-bearing capacity was evaluated by visually checking the appearance changes of the parts corresponding to the ends of the panel materials adjacent to the connecting materials or slope materials. The results are shown in Table 1 below.

[0047] In Table 1, "◎" indicates an excellent result (OK) with almost no change in appearance, "○" indicates a good result (OK) with only a very slight change in appearance, "△" indicates a practical result (OK) with only a negligible change in appearance, and "×" indicates a clear change in appearance that was not suitable for practical use (NG).

[0048] Test conditions Wheels: Material: Steel Diameter / 100mm Width / 30mm Load capacity: 70kgf Number of round trips: 1000 round trips

[0049] [Test Results] The results of the above tests are shown in Table 1.

[0050] [Table 1]

[0051] As can be seen from Table 1, the comparative specimen 1, which had no connecting material, gave an NG test result. In contrast, specimens 1 to 6, which had connecting materials, gave OK test results. Among them, specimens 2 and 5 gave good (○) test results, and specimens 3 and 4 in particular gave excellent (◎) test results.

[0052] It was therefore confirmed that the impact absorbing floor material of the present invention can significantly prevent deterioration of the appearance of the boundary between the panel material and the slope material. [Industrial Applicability]

[0053] The impact absorbing floor material of the present invention can significantly prevent deterioration of the appearance of the boundary between the panel material and the slope material, and can therefore be used extremely beneficially in various industries, including the construction industry. [Explanation of symbols]

[0054] 10. Shock-absorbing flooring 11 Panel material 11a Top side 11A Floor Underlayment 11B Intermediate material 12 Slope material 12a Top side 13 Contact information 13a Top side 14 Flooring material F Floor

Claims

1. A panel material that is laid on the floor surface to absorb shock; A slope material made of a resin material is laid on the floor surface and has an inclined upper surface so as to connect an upper surface of the panel material to the floor surface; a sheet-shaped floor covering material provided so as to cover the upper surface of the panel material and the upper surface of the slope material; An impact absorbing floor material comprising: A connecting member made of an elastic body is provided between the panel material and the slope material so as to connect the upper surface of the panel material and the upper surface of the slope material. A shock-absorbing flooring material characterized by the above.

2. The connecting member is made of a rubber material.

2. The impact absorbing floor material according to claim 1.

3. The connecting material has a Shore A hardness of 30 or more and 90 or less.

3. The impact absorbing floor material according to claim 2.

4. The connecting material has a Shore A hardness of 40 or more and 80 or less.

3. The impact absorbing floor material according to claim 2.

5. The slope material is made of a foamed resin material.

2. The impact absorbing floor material according to claim 1.

6. The slope material has a Shore A hardness of 30 or more and 70 or less.

6. The impact absorbing floor material according to claim 5.

7. The panel material is A floor underlayment material made of a soft resin material provided on the floor surface side; An intermediate material that is harder than the floor underlayment and is provided on the floor overlayment side; 2. The impact absorbing floor material according to claim 1, further comprising:

8. The floor underlayment is made of a foamed resin material.

8. The impact absorbing floor material according to claim 7.

9. The floor underlayment has an Asker C hardness of 20 or more and 60 or less.

9. The impact absorbing floor material according to claim 8.

10. The intermediate material is made of a resin material containing 30% by mass or more and 85% by mass or less of an inorganic filler.

8. The impact absorbing floor material according to claim 7.

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